Small Systems Monthly Webinar Series

Images of small drinking water and wastewater systems related researchChallenges and Treatment Solutions for Small Water Systems

Free webinars held each month from 2:00-3:00 pm ET (Optional Q&A session from 3:00-3:30 pm ET)

EPA's Office of Research and Development and Office of Water are hosting this monthly webinar series to communicate current small drinking water systems research along with Agency priorities. The series is providing a forum for EPA to communicate directly with state personnel and other drinking water small systems professionals, which allows EPA to provide training and foster collaboration and dissemination of information. This, in turn, provides state agencies with the information and resources they need to communicate the latest scientific advancements and current guidance to their small systems. The webinars are also providing EPA with invaluable information from the states on the problems that they are currently encountering in their interactions with small systems. EPA scientists and engineers can then modify their research to solve real-world small-systems problems. 

Attendees have the option of receiving a certificate for one continuing education contact hour for each webinar. Acceptance of the certificates is contingent on state and/or organization requirements—EPA cannot guarantee acceptance.

Schedule and Registration (Subject to change)

  • September 26, 2017 - Decision Support Methodology for Small Systems to Evaluate and Select Treatment Technologies

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    Glass being filled with tap waterBackground: As part of the Science to Achieve Results grant program, EPA has funded two National Research Centers for Small Drinking Water Systems: The Design of Risk Reducing, Innovative Implementable Small System Knowledge (DeRISK) Center at the University of Colorado Boulder and the Water Innovation Network for Sustainable Small Systems (WINSSS) Center at the University of Massachusetts at Amherst. These centers are developing and demonstrating innovative technologies to better reduce, control and eliminate groups of chemical or microbial contaminants in small water systems. They are leveraging efforts with stakeholders and researchers involved in facilitating small drinking water system sustainability. The investment in the Center projects will enhance the resiliency of small systems and improve water quality, thereby, protecting public health. This webinar will present some of the DeRISK Center's drinking water treatment technology research efforts.

    Presentation Summary: Water utilities can struggle to know which treatment technologies to consider and then which one to select and implement to solve their water quality and compliance challenges. This is particularly challenging for small water systems without resources to stay up-to-date on the range of appropriate technology options and their associated treatment and operational performance. This presentation will highlight a decision support methodology developed by the DeRISK Center to address this challenge by deciding what criteria are most important to stakeholders and providing and easy way to compare technology alternatives to each other with respect to each criterion. This approach strives to go beyond just a conventional analysis and comparison of costs by including (1) a facilitated decision support methodology, (2) data on innovative treatment technologies, (3) relative health risk protection of treatment approaches, (4) sustainability measures of treatment approaches, and (5) stakeholder preferences. Case studies will also be presented.

    About the Presenters

    Dr. Chad Seidel, DeRISK CenterChad Seidel, Ph.D. | Contact: chad.seidel@Colorado.EDU
    Dr. Seidel is Technical Director of the DeRISK Center at the University of Colorado Boulder – a USEPA-funded center focused on addressing challenges faced by small drinking water systems. He is also President at Corona Environmental Consulting, LLC where he brings his more than 17 years of consulting experience serving the drinking water community. Dr. Seidel is a registered Professional Engineer in the State of Colorado.

     

    Dr. R. Scott Summers, DeRISK CenterR. Scott Summers​, Ph.D.  | Contact: r.summers@colorado.edu
    Since 1998, Dr. Summers has been a professor of environmental engineering at the University of Colorado-Boulder. He has over 30 years of drinking water research experience. He spent two years as a research associate at EPA’s national research lab, two years as a research associate at the German water works research institute at the University of Karlsruhe, 10 years as a professor at the University of Cincinnati and was a Fulbright Professor at the University of Crete (Greece). Dr. Summers holds BS and MS degrees from the University of Cincinnati and a PhD from Stanford University in Civil and Environmental Engineering. His areas of expertise are adsorption and biological treatment technologies as applied to natural organic matter, disinfection by-products, trace organic contaminants and taste & odor. For the last 10 years he has researched water treatment technologies for developing communities, including funding by the Bill & Melinda Gates Foundation and water reuse treatment.

    Dr. Summers is the director of the DeRISK Center (2014-present) and was director of the Center for Drinking Water Optimization (1998-2004) both funded by the USEPA and focus on small drinking water systems. He has been the principal investigator (PI) or coPI of over 30 research projects. He has served as the research advisor for over 25 PhD and 50 MS students and has co-authored over 250 publications and 150 presentations. He received the 2013 A.P. Black Award for drinking water research from AWWA. Dr. Summers has served as a principal technical consultant to EPA's regulatory development and review process including; Microbial/Disinfection Byproduct Rule cluster (1992-2001), National Drinking Water Advisory Council on Arsenic (2001), Lead and Cooper Rule (2004-2005) and Total Coliform Rule/Distribution System Advisory Committee (2006-2008).

  • October 31, 2017 - State Acceptance of UV Disinfection Technologies

    Registration coming soon.

    Low Pressure Ultraviolet reactor used in evaluationsPresentation 1—State Approval of UV Treatment for Drinking Water: Facing Challenges Through Collaboration (Presented by Derek Losh, EPA’s Office of Research and Development). Many states would like their public water systems to have the opportunity to take advantage of UV treatment, but they do not have enough experience with review and approval of these technologies. Some states have expressed an interest in collaborating with others in order to build on their knowledge and experience. Over the past several years, EPA has facilitated a series of meetings with drinking water staff from the Ohio EPA, the Indiana Department of Environmental Management, and the Kentucky Department for Environmental Protection. The primary goal of these meetings has been to identify a set of technical priorities for review and approval of UV equipment installation and ongoing compliance monitoring that are common to all three states. The group is currently drafting a set of documents to share with the drinking water community. This presentation will summarize the group’s activities and identify some of the unique challenges that states face when evaluating UV water treatment technologies.

    Presentation 2—EPA UV Testing and Recommendations for Reactor Validation (Presented by Jeffrey Adams, EPA’s Office of Research and Development). Public water systems (PWSs) have implemented ultraviolet (UV) disinfection for the inactivation of regulated pathogens in accordance with the requirements of the Long Term 2 Enhanced Surface Water Treatment Rule and the Ground Water Rule and the guidance provided by the Ultraviolet Disinfection Guidance Manual (UVDGM). Since the UVDGM was published in 2006, there has been considerable advancement in the understanding and application of UV technologies, particularly in the area of UV dose monitoring and validation. An ongoing EPA research effort has focused on developing new protocols for UV validation testing and analysis that leverage advances and may help to improve implementation and operation at PWSs. This work also provides for updated clarifications to the UVDGM based on evolving practice in the UV industry since its publication. The new protocols from this effort should not be construed as a replacement to the 2006 UVDGM but rather additional approaches for consideration. This presentation will highlight aspects of these new UV validation testing approaches for disinfection applications of Cryptosporidium, Giardia, and viruses using various test microbes. The status of ongoing peer review of the draft research report will also be discussed.

    About the Presenters

    Derek LoshDerek Losh | Contact: losh.derek@epa.govDerek has been an environmental engineer with EPA's Office of Ground Water and Drinking Water since 2004. His initial experience was in developing regulatory determinations for drinking water contaminants. Now, most of his time is spent on implementation of the Unregulated Contaminants Monitoring Rule (UCMR). More recently, he has been involved in projects initiated by EPA’s Environmental Technology Innovation Clusters Program.


     

    Jeffrey AdamsJeffrey Adams | Contact: adams.jeffrey@epa.govJeff is an environmental engineer with EPA’s ORD, National Risk Management Research Laboratory, Water Systems Division. Over the last decade he managed EPA’s Environmental Technology Verification Drinking Water Systems Center, which conducted studies evaluating the performance and sustainability of water treatment and monitoring technologies, including filtration processes, membrane separation, adsorptive media, UV and disinfection processes, and advanced oxidation technologies. Jeff has managed, authored, and co-authored numerous technical articles and has served on American Water Works Association (AWWA) technical committees and Water Research Foundation project advisory committees. He currently serves as a project manager for EPA supported UV technology studies. He received an M.S. and B.S. in Civil/Environmental Engineering from the University of Cincinnati.

2017 Webinar Recordings

Recordings of the 2017 webinars are available below and are being hosted on EPA's YouTube channel. Continuing education contact hour certificates cannot be offered for watching the webinar recordings.

  • Treatment and Control for Manganese and Iron (August 29, 2017)

    Recording coming soon.

    Glass being filled with tap waterPresentation 1: Arsenic/Iron Removal from Groundwater in the Presence of Elevated Ammonia and Natural Organic Matter (Presented by Lili Wang, EPA's Office of Water). Under EPA’s Arsenic Demonstration Program, an iron removal process consisting of permanganate oxidation followed by GreensandPlus™ filtration was shown to be effective in removing soluble iron (2.3 mg/L on average) and soluble arsenic III (24.1 μg/L on average) from a groundwater source in Waynesville, IL. The source water also contained elevated ammonia (3.8 mg N/L on average) and natural organic matter (7.9 mg/L of total organic carbon on average). This presentation discussed the results of the demonstration study, including several bench-scale tests to determine the oxidant type and dosage, design and operation of the full-scale iron removal system, and a 14-month-long system performance evaluation. The plant compliance monitoring data from 2006 to 2016 was also be discussed.  

    Presentation 2: Simultaneous Removal of Arsenic, Iron, Ammonia, and Manganese by Biological Water Treatment (Presented by Dr. Darren A. Lytle, EPA's Office of Reserach and Research). Intensive agricultural practices in North America contribute significant amounts of ammonia to surface and groundwater supplies.  While not regulated as a contaminant in finished drinking water, ammonia has the potential to increase chlorine consumption and cause nitrification problems in the distribution system and interfere with arsenic reduction. Coincidentally, in many parts of the Midwest, groundwaters with elevated ammonia are also contaminated with arsenic, iron, and manganese, all of which have primary or secondary maximum contaminant levels (MCLs.) The investigators have successfully demonstrated an innovative, technically simple, and operationally inexpensive aerobic biological process to reduce several of these contaminants simultaneously. The objective of this presentation was to present the results of a pilot study using this innovative biological treatment system to simultaneously remove ammonia, arsenic, iron and manganese. Specifically, a year-long pilot study was performed in Iowa on a groundwater that had 23 µg/L arsenic, 80 µg/L manganese, 2.9 mg/L iron and 2.9 mg N/L ammonia. 

    About the Presenters

    Lili WangLili Wang, P.E. | Contact: wang.lili@epa.gov
    Lili is an environmental engineer and a team lead in EPA’s Office of Water, Office of Ground Water and Drinking Water in Washington DC. She has 20 years of combined experience in drinking water research, regulations and policies. Prior to joining EPA in 2011, Lili had performed or supervised numerous studies to evaluate the removal of contaminants from ground water and drinking water through conventional and advanced treatment processes. In particular, she served as the deputy program manager for EPA’s Arsenic Demonstration Program from 2003 to 2010. Lili has a B.S. in environmental engineering from Tsinghua University in China and an M.S. in environmental sciences and an MBA from the Ohio State University.

    Dr. Darren LytleDarren A. Lytle, Ph.D., P.E.  | Contact: lytle.darren@epa.gov
    Darren is an environmental engineer for the Water Systems Division of EPA’s National Risk Management Research Laboratory in Cincinnati, Ohio. Since beginning work at EPA in 1991, his primary goal has been to research the quality of drinking water. Over the years, Darren has investigated and published works on drinking water systems, including work on distribution system corrosion control and water quality (e.g., red water control, lead and copper corrosion control); filtration (emphasis on removal of particles, and microbial contaminants and pathogens from water); biological water treatment; and iron and arsenic removal. Darren holds a B.S. in civil engineering from the University of Akron (1990), a M.S. in environmental engineering from the University of Cincinnati (1991), and a Ph.D. in environmental engineering from the University of Illinois (2005).

  • Water Loss and Distribution System Infrastructure: Leak Detection and Cost Savings (July 25, 2017)

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    Image of a water main break and a leaking pipe undergroundDisclaimer: Any mention of trade names, manufacturers or products does not imply an endorsement by the U.S. Government or the U.S. Environmental Protection Agency. EPA is distributing this information solely as a public service. Both LB Water/FlowNetworx and Louisiana Tech University are responsible for the quality of this information. EPA’s distribution of this information does not represent or imply endorsement by EPA. EPA and its employees do not endorse any commercial products, services, or enterprises.

    Presentation 1: Water Loss Management to Reduce Non-Revenue Water (Presented by John Brutz, FlowNetworx). This presentation will review methods to reduce non-revenue water with practical and cost-effective water loss management. This will include how to (1) assess and identify water loss within the water distribution system, (2) quantify non-revenue water, and (3) monitor system consumption and pressure will be discussed. In addition, the presentation will include how to use water audits to identify and quantify real loss versus assumed loss, as well as basic leak detection techniques to identify, localize, and repair leaks quicker and more efficiently with Advanced Metering Infrastructure integration.

    Presentation 2: Rehabilitation Technologies for Small Water System Pipelines (Presented by Dr. John C. Matthews, Louisiana Tech University). This presentation will focus on the latest innovations for the rehabilitation of water mains, primarily focused on trenchless technologies. Technologies that will be covered include cured-in-place pipe lining, close-fit sliplining, pipe bursting, pipe reaming, spray-in-place pipe lining, and various spot repair techniques. The applicability, advantages, and limitations for each technology will be discussed.

    About the Presenters

    John BrutzJohn Brutz | Contact: john.brutz@lbh2o.com
    John is the General Manager for FlowNetworx. His core work involves helping cities, boroughs, and municipalities to establish and implement leak detection and Inflow and Infiltration Programs with modern technology integration. In 1988, John began his career in the waterworks industry, where he operated and managed water and wastewater treatment plants and distribution and collection systems for over 19 years. John attended Indiana University of Pennsylvania.


     

    Dr. John MatthewsJohn C. Matthews, Ph.D. | Contact: matthews@latech.edu
    John is an Associate Professor of Civil Engineering and Construction Engineering Technology at Louisiana Tech University (LA Tech) and the Director of the Trenchless Technology Center (TTC). For more than 10 years, his research—some in collaboration with EPA—has focused on innovative technologies for the assessment and rehabilitation of water and sewer pipelines, and has resulted in more than 140 technical publications. John is an active member of the North American Society for Trenchless Technology, where he serves on the Board of Directors. John holds a B.S. in Construction Engineering Technology, and a M.S. and Ph.D. in Civil Engineering all from LA Tech.

  • Harmful Algal Blooms: Treatment, Risk Communications Toolbox, and Management Plans (June 27, 2017)
    Image right: cyanobacterial bloom on Lake Erie; Image top left: algal bloom study samples from EPA' lab in Cincinnati; Image bottom left: Research laboratory at EPA Cincinnati

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    Presentation 1: Cyanotoxin Risk Management for Drinking Water Systems (Presented by Hannah Holsinger, EPA's Office of Water). Harmful algal blooms (HABs) and cyanotoxins are a growing concern worldwide. HABs producing cyanotoxins can pose a risk to public health through multiple routes of exposures including drinking water. Proactive planning can prepare public water systems to manage risks from these events. EPA has developed multiple tools to facilitate proactive planning including the support document Recommendations for Public Water Systems to Manage Cyanotoxins in Drinking Water, the Cyanotoxin Management Plan Template and Example Plans. These tools provide information for preparing for a bloom and mitigating the effects of a bloom including monitoring, treatment, and communication activities–including a fillable template to facilitate the risk plan development process. EPA has also developed multiple other sources of information and tools that can be used to support the development of a cyanotoxin risk management plan.

    Presentation 2: Cyanobacteria Treatment Options—Focus on Permanganate and Powdered Activated Carbon (Presented by Nick Dugan, EPA's Office of Research and Development). This presentation began with a brief overview of drinking water treatment options for cyanobacteria and their toxins. The treatment discussion focused on the impacts of permanganate addition to suspensions of toxin-producing Microcystis aeruginosa, followed by powdered activated carbon (PAC) addition. Study results on changes in toxin concentrations, chlorophyll-a concentrations, and cell membrane integrity were shown.

    About the Presenters

    Hannah HolsingerHannah Holsinger | Contact: holsinger.hannah@epa.gov
    Hannah is a physical scientist and current cyanotoxin team lead for the drinking water program within EPA’s Office of Water, Office of Ground Water and Drinking Water (OGWDW). In addition to her cyanotoxin work in OGWDW, she works on the microbial Contaminant Candidate List, and has previously worked on the Endocrine Disruptor Screening Program and the Legionella support document on treatment technologies for premise plumbing. Hannah has a B.S. in Biological Sciences with a second major in Food Science and Technology from Virginia Tech; and a Master of Public Health, focusing on environmental health, from the University of Kentucky.

    Nick DuganNick Dugan | Contact: dugan.nicholas@epa.gov
    Nick is an environmental engineer with EPA’s Office of Research and Development, National Risk Management Research Laboratory in Cincinnati, Ohio, where he specializes in drinking water treatment. In addition to his work with cyanobacteria and cyanobacterial toxins, he has performed treatment studies to evaluate the control of cryptosporidium, nitrate, perchlorate, pesticides, and disinfection byproduct precursors. Nick has a M.S. in Environmental Engineering and a B.S. in Civil and Environmental Engineering from the University of Cincinnati, and a B.A. in Economics from Carleton College.

  • Water Systems Partnerships (May 30, 2017)
    Small drinking water system in Indiana

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    Presentation 1: Partnerships and their Benefits to Small Systems (Presented by Ellen Tarquinio, US EPA's Office of Water). Small systems face unique challenges in providing affordable drinking water that meets federal and state regulations. These challenges include aging infrastructure, increasing costs and declining rate bases, and limited technical and managerial capabilities. Water systems can overcome these challenges by developing partnerships with other systems. Partnerships provide opportunities to collaborate on compliance solutions and operations and maintenance activities and to share costs with other nearby systems, which increases capacity and enables systems to provide safe and affordable water to their communities. This presentation provided an introduction to the various types of water system partnerships and how these can benefit small water systems.

    Presentation 2: California Consolidation Case Study (Presented by Chad Fischer, California EPA's Division of Drinking Water). On June 24, 2015, California's governor signed Senate Bill 88 authorizing CalEPA’s State Water Board to require systems that consistently fail to meet standards to consolidate with, or obtain service from, a public water system. Senate Bill 88 is crafted to expedite permanent solutions for failing water systems and those that have run out of water due to the drought. Consolidating public water systems and extending service from existing public water systems to communities and areas that currently rely on under-performing or failing small water systems, as well as private wells, reduces costs and improves reliability. This presentation focused on small water system challenges, the advantages of consolidation, the California SB-88 process and two consolidation case studies.

    About the Presenters

    Ellen Tarquinio | Contact: tarquinio.ellen@epa.gov
    Ellen is an environmental protection specialist with the Office of Ground Water and Drinking Water's Drinking Water Protection Division within EPA's Office of Water where she focuses on water system partnerships for drinking water systems. Ellen started at the EPA in 2004, developing and leading the National Rivers and Streams Assessment and the National Lakes Survey. After a year working for the EPA Administrator, she served as the Deputy Director for Water Policy at the White House. Previously, Ellen worked as a fisheries biologist and GIS specialist for New York State.

    Chad Fischer, Engineer, California EPAChad Fischer | Contact: chad.fischer@waterboards.ca.gov
    Chad is an engineer with California EPA’s (CalEPA) Division of Drinking Water. He has been with CalEPA for nine years, the last three of which Chad has led a work team focused on small water systems in California’s Central Valley. The work area is primarily composed of disadvantaged communities with a variety of water quality challenges. Chad received a B.S. in Chemical Engineering from the University of California, Berkeley and is a registered Professional Engineer in the State of California

  • Water Security and Resiliency (April 25, 2017)
    Image of water tower felled by a storm, image of an engineer, image of a water tower, image of the inside of a treatment plant

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    Presentation 1: Resiliency Framework and the Route to Resilience Tool (Presented by Jeffrey F. Fencil, EPA's Office of Water). Maintaining and repairing aging drinking water infrastructure remains a significant challenge for the water sector. Utilities must be able to increase their readiness and resilience to potential all-hazard incidents, and adapt to future hazards that may impact their ability to provide safe and clean drinking water. The Resiliency Framework defines what it means to be a resilient drinking water/wastewater utility and provides a greater sense of cohesion among EPA’s water security products and services. The Route to Resilience (RtoR) Tool, features the framework and is specifically designed to help small- and medium-sized drinking water and wastewater utilities learn more about becoming resilient to all-hazards, such as floods, tornadoes, hurricanes and contamination incidents. This presentation introduced the framework and provided an overview of the RtoR Tool.

    Presentation 2: Using Hydraulic Modeling to Assess Resilience of Drinking Water Systems to Natural Disasters and Other Hazards (Presented by Dr. Regan Murray, EPA's Office of Research and Development). Drinking water systems are subject to floods, power outages, extreme winter storms, contamination incidents and other hazards that can disrupt service to customers and damage critical infrastructure. This presentation demonstrated a new hydraulic modeling tool—the Water Network Tool for Resilience (WNTR)—that will be available to the public later this year. WNTR will help water utilities investigate the resilience of their water systems to a wide range of hazardous scenarios and evaluate emergency response actions and long term resilience‐enhancing strategies. The software estimates potential damages from disaster scenarios; predicts how damage to infrastructure would occur over time; evaluates preparedness strategies; prioritizes response actions; and identifies worse case scenarios, efficient repair strategies, and best practices for maintenance and operations. An application to a small system was presented.

    About the Presenters

    Jeffrey FencilJeffrey F. Fencil | Contact: fencil.jeffrey@epa.gov
    Jeffrey is an Environmental Scientist with the Office of Ground Water and Drinking Water's Water Security Division within EPA's Office of Water. Since joining the division in 2006, he has served as the lead for Consequence Management under the Water Quality Surveillance and Response System program and currently works on emergency response related activities under the Security Assistance Branch. Prior to joining EPA, Jeffrey worked as a technical instructor for the New England Water Works Association, where he conducted numerous training programs on drinking water related topics. He holds a B.A. degree in biology from Providence College and a M.S. in Environmental Science from the University of New Haven.

     

    Dr. Regan MurrayRegan Murray, Ph.D. | Contact: murray.regan@epa.gov
    Regan is Chief of the National Risk Management Research Laboratory's Drinking Water Treatment and Distribution Branch within EPA's Office of Research and Development. During her 15 years at the EPA, she has developed systems modeling approaches to address security and resilience to natural disasters. Regan has a Ph.D. in Applied Mathematics and Hydrology and Water Resources from the University of Arizona.


     
  • Source Water Protection (March 28, 2017)
    EPA's source water protection research in Ohio. Top left: Monitoring bouy; Bottom letf: drinking water plnat intake; Right: Researchers working with stakeholders on watershed management

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    Presentation 1: Publicly-Available GIS Applications, Data Resources, and Analytical Tools (Presented by Bo Williams, EPA's Office of Water). Protection of surface and groundwater sources is an essential and cost-effective first line of defense in an integrated, multi-barrier approach to public health protection. It is far more effective and potentially cheaper to prevent or reduce contaminants at their source than it is to treat them at a public water system. A number of web-based GIS applications, data resources, and analytical tools are publicly-available for use by federal and state agencies, water utilities, and others to inform source water protection actions. This presentation described several of these tools, including the Drinking Water Mapping Application to Protect Source Waters (DWMAPS), and showcased how they can be applied to update source water assessments and protection plans, prepare utilities for emergency situations, and support partnerships efforts.

    Presentation 2: Ecological and Economic Modeling (Presented by Dr. James Price, Dr Chris Nietch, and Dr. Matt Heberling, EPA's Office of Research and Development). With concerns about drinking water quality and safety expanding, it is becoming increasingly important to understand the associated costs and potential benefits of better watershed management for drinking water treatment plants. This presentation began with a review of economic studies that estimate the benefits of improving source water quality for treatment plants. A general approach that compares the benefits to source water protection costs was also presented. To illustrate the approach, a case study that estimated the incentives for a drinking water treatment plant to invest in source water protection was discussed.

    About the Presenters

    Dr. Bo WilliamsJames ("Bo") Williams | Contact: williams.james@epa.gov
    Bo is a Biologist in the Drinking Water Protection Division of EPA’s Office of Ground Water and Drinking Water in Washington, DC. As a member of the Source Water Protection program, he manages geospatial analyses and outreach in a variety of projects to protect sources of drinking water and supports the national Source Water Collaborative. Prior to joining EPA, he worked on watershed restoration and planning projects in California, Michigan, and the Potomac River watershed. Bo has an M.S. in Environmental Planning from the University of Michigan and a B.A. in History from Kenyon College.



     

    Dr. James PriceJames Price, Ph.D. | Contact: price.james@epa.gov
    James is a Postdoctoral Associate with EPA’s Office of Research and Development (ORD)/National Risk Management Research Laboratory (NRMRL) in Cincinnati, Ohio. His recent research focuses on valuing changes in the quality of water resources. James holds a Ph.D. in economics from the University of New Mexico.




     

    Dr. Christopher NietchChristopher Nietch, Ph.D. | Contact: nietch.christopher@epa.gov
    Chris is a Research Ecologist with EPA’s ORD/NRMRL in Cincinnati, Ohio. He conducts and directs research programs in watershed ecology, working towards better water quality management systems. Chris has a Ph.D. from the University of South Carolina in coastal marine and biological sciences.





     

    Dr. Matthew HeberlingMatthew Heberling, Ph.D. | Contact: heberling.matthew@epa.gov
    Matt is a Research Economist with EPA’s ORD/NRMRL in Cincinnati, Ohio. His current research focuses on estimating the economic benefits of improving water quality and using economic incentives for controlling pollution. Matt holds a Ph.D. in agricultural economics from The Pennsylvania State University.



     
  • Removal of Inorganic Contaminants of Interest: Strontium and Nitrates (February 28, 2017)
    Glass being filled with tap water

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    Presentation 1: Removal of Strontium from Drinking Water by Ion Exchange and Lime Softening (Presented by Dr. Darren A. Lytle, EPA's Office of Research and Development). This presentation provided removal results from full-scale demonstration studies on ion exchange and lime softening treatment for ground water systems. Over the course of a year, data was collected monthly from eight full-scale ground water treatment systems (four lime softening and four ion exchange) to analyze the effectiveness of the removal technologies used.

    Presentation 2: Nitrate Treatment Technologies for Drinking Water (Presented by Eugene Leung, California State Water Resources Control Board, Division of Drinking Water). This presentation highlighted the latest treatment technologies being evaluated and used in California for nitrate treatment. Specifically, optimized ion exchange treatment and biological treatment was covered, as was the use of point-of-use technologies as an interim treatment solution. The unique implementation issues for these technologies was discussed, along with how they differ from traditional treatment technologies for nitrate removal. Ultimately, the complexity of the operation of many of these technologies and their costs pose the greatest challenge, opening the door for the potential need for regionalization and consolidation of efforts.

    About the Presenters

    Darren A. Lytle, Ph.D., P.E. - Dr. Lytle is an environmental engineer for EPA's Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division in Cincinnati, Ohio. Since beginning work at EPA in 1991, his primary research focus has been on drinking water quality. Over the years, Dr. Lytle has investigated and published works on drinking water systems, including work on distribution system corrosion control and water quality (e.g., red water control, lead and copper corrosion control); filtration (emphasis on removal of particles, and microbial contaminants and pathogens from water); biological treatment; and iron and arsenic removal.

    Eugene Leung, P.E.- Eugene works for the California State Water Resources Control Board, Division of Drinking Water (DDW). He is a Drinking Water Technical Specialist and is based at the Richmond office in the San Francisco Bay Area. Eugene has been with the Drinking Water Program since June of 1997. He was a Sanitary Engineer and Associate Sanitary Engineer at the Santa Clara District through March 2010, and was responsible for the oversight, inspection, and permitting of water systems and treatment facilities. Eugene now provides technical support to DDW’s district offices on treatment related matters. He graduated from UCLA, with BS and MS degrees in Civil & Environmental Engineering. Eugene is also a registered Civil Engineer and a T4 Water Treatment Operator in California.

  • Disinfectant Residuals (January 31, 2017)
    EPA scientists analyzing drinking water samples (Left image), EPA scientist sampling fire hydrant for disinfectant residuals (top right), EPA scientist and citizens collecting water sample from fire hydrant (bottom right)

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    Presentation 1: Development of a Disinfectant Residual Monitoring Plan (Presented by Matthew Alexander, EPA's Office of Ground Water and Drinking Water). Maintaining adequate disinfectant residual throughout the distribution system is essential to assure public health protection. Collecting reliable chlorine residual data is necessary to ensure that disinfectant barrier is in place. This presentation described how to develop a monitoring plan that is representative of the overall distribution system, collect samples to accurately characterize water quality, and understand interferences and limitations of commonly used field methods.

    Presentation 2: Disinfectant Residual – Representative Monitoring and Minimum Residual Implications (Presented by Dr. Jonathan G. Pressman, EPA’s Office of Research and Development). For public drinking water systems in the U.S. using surface water and/or ground water under the influence of surface water sources, EPA and state regulations require residual disinfectants to be maintained throughout the water distribution system. However, minimum residual concentrations, number of samples, and locations for monitoring vary widely. This presentation reviewed the history of distribution system chlorine monitoring siting, overview the diversity in state regulations/guidance, and presented a case study demonstrating an evaluation of chlorine monitoring locations in a distribution system. Finally, residual disinfectant concentration vs. coliform/E. coli data were presented from the Agency’s recently released third Six-Year Review supporting the relationship between disinfectant residual and microbial stability reported in the scientific literature.

    About the Presenters

    Matthew AlexanderMatthew Alexander (Contact: alexander.matthew@epa.gov)
    Matthew is an engineer in EPA’s Office of Groundwater and Drinking Water in Cincinnati, Ohio. As a member of the Agency’s Area-Wide Optimization Program (AWOP), he supports the development and demonstration of various optimization approaches and provides technical assistance related to distribution system water quality, with particular emphasis on maintaining disinfectant residual and storage tank operations. Matthew has a B.S. in civil engineering and a M.S. in environmental engineering from the University of Cincinnati. He is also a registered professional engineer in Ohio.



     

    Jonathan PressmanJonathan G. Pressman, Ph.D., P.E. (Contact: pressman.jonathan@epa.gov)
    Dr. Pressman is a Research Environmental Engineer in the Water Supply and Water Resources Division of U.S. EPA’s Office of Research and Development located in Cincinnati, Ohio. His research interests include characterizing natural organic matter in drinking water sources with particular emphasis on disinfection byproduct formation, membrane processes for both drinking water treatment and natural organic matter concentration, and disinfection and nitrification in drinking water distribution systems. Disinfection and nitrification research includes special interests in minimum residuals, molecular genetics and microbiological engineering. Dr. Pressman has a B.S. in civil engineering from Cornell University and a master’s and Ph.D. in civil engineering from The University of Texas at Austin. He is a registered professional engineer in Ohio and Texas.

2016 Webinar Recordings

Recordings of the 2016 webinars are available below and are hosted on the Association of State Drinking Water Administrators' (ASDWA) website. Exit Continuing education contact hour certificates cannot be offered for watching previously recorded webinars.

  • Approaches to Technology Approval (December 13, 2016)
    Drinking water treatment technologies

    Webinar recording coming soon.

    As part of the Science to Achieve Results grant program, EPA has funded two National Research Centers for Small Drinking Water Systems: The Design of Risk Reducing, Innovative Implementable Small System Knowledge (DeRISK) Center at the University of Colorado Boulder and the Water Innovation Network for Sustainable Small Systems (WINSSS) Center at the University of Massachusetts at Amherst. These centers will develop and demonstrate innovative technologies to better reduce, control and eliminate groups of chemical or microbial contaminants in small water systems. They are leveraging efforts with stakeholders and researchers involved in facilitating small drinking water system sustainability. The investment in the Center projects will enhance the resiliency of small systems and improve water quality, thereby, protecting public health. This webinar presented some of the centers’ drinking water treatment technology research efforts.

    • Presentation 1 - Analysis of drinking water systems survey: Developing a better understanding of drinking water technology Approval (Presented by Steve Wilson, University of Illinois). The WINSSS Center presented the results of the survey, “Developing A Better Understanding of Drinking Water Technology Approval.” The Association of State Drinking Water Administrators and the DeRisk and WINSSS Centers conducted a survey of state primacy agencies to better understand the landscape surrounding regulatory acceptance and approval of new treatment technologies used by small community water systems. The survey focused on state barriers to acceptance, how emerging technologies are being used nationwide, how existing data sources are being used, what data are needed for acceptance, and states’ interest in working together for technology acceptance. This effort has led to the formation of a workgroup of state technology leads that are currently exploring possible approaches to developing a nationwide data sharing and evaluation approach to technology acceptance.
    • Presentation 2 - Appropriate application of innovative technologies for small drinking water systems: The DeRISK Center’s decision support methodology (Presented by Dr. Bill Hogrewe, Rural Community Assistance Partnership). In addition to researching innovative drinking water technologies, the DeRISK Center is investigating strategies for assessment and implementation that can facilitate the selection and appropriate application of technologies that will optimize risk reduction and sustainability. This implementation approach is based on the development of a multi-criteria decision support methodology and a training design support tool. This methodology is designed to reconcile characteristics of drinking water technologies (innovative and conventional) with the preferences and technical, managerial, and financial capacity limitations of a given system. This presentation addressed the training design support tool and its goal to facilitate the creation of effective training packages and events on innovative technologies for stakeholders involved in the evaluation, approval, provision, and operation of these new and innovative technologies.

    About the Presenters

    Steve Wilson- Steve is a groundwater hydrologist who’s been with the Illinois State Water Survey at the University of Illinois since 1983. He authored “The Private Well Class,” an online self-paced curriculum for private well owners, and manages WaterOperator.org, an online resource for water and wastewater operators that supports small systems. He is past Director of the Midwest Technology Assistance Center, is involved in a number of small system initiatives with the Rural Community Assistance Partnership (RCAP), and is part of the WINSSS Center. Steve has a B. S. in Agricultural Engineering and a M. S. in Civil Engineering from the University of Illinois at Urbana-Champaign.

    Bill Hogrewe, Ph.D., P.E.- Bill is the Director of Engineering Services at the Rural Community Assistance Partnership (RCAP). Prior to joining the RCAP National Office staff, he provided technical assistance and training for small community water and wastewater operators and managers with RCAC – the Western RCAP. He is an environmental engineer with over 40 years of experience in the planning, funding, design, construction, and operation of small and large water and wastewater facilities. He holds a B.S. in chemical engineering from Auburn University and M.S. and Ph.D. degrees in environmental engineering from the University of Colorado. He is a registered engineer in Colorado and Arizona.

  • Capacity Development and Asset Management (November 29, 2016)
    small drinking water systems. Small drinking water clearwell (bottom left), uranium treatment (top left), drinking water tower (middle), image of money, eyeglasses, and computer keyboard (right)

    Webinar recording coming soon.

    Capacity development program for public water systems (Presented by Adrienne Harris and Susanna Bains, EPA's Office of Water) The goal of the capacity development program is to strengthen technical, managerial, and financial capacities of public water systems to reliably provide safe drinking water. Asset management provides a framework that helps water systems make informed decisions about their water infrastructure management. Going through an asset management process will give systems a documented understanding of the assets they have, how long they will last, and how much it will cost to repair, rehabilitate or replace them. This presentation provided background on the Capacity Development program, discussed how asset management can be a tool for building the capacity of water systems, and provided EPA tools available to assist in the implementation of these programs.

    Asset management for water and wastewater systems (Presented by Daniel J. Murray, Jr., P.E., BCEE – EPA's Office of Research and Development). There has been a profound transformation in the system management approach being taken by our water and wastewater utilities. Utilities are changing their focus from building and operating systems, to managing assets. This shift in perspective improves the ability of utilities to extend asset life; optimize maintenance and renewal; develop strategic, long-term funding plans; and sustain long-term performance. Asset management decision-making—throughout the life cycle of an asset—improves acquisition, operation, maintenance, and renewal. It also results in the lowest total cost of ownership. Effective asset management answers five core questions to reach its strategic goals:

    1. What is the current state of my assets?
    2. What is my required level of service?
    3. Which assets are critical to sustained performance?
    4. What are my best O&M and capital investment strategies?
    5. What is my best long-term funding strategy?
     

    This presentation provided a high level overview of asset management, focusing on condition assessment, rehabilitation and renewal, risk-based and life-cycle decision-making, and total cost of ownership.

    About the Presenters

    Adrienne Harris- Adrienne joined EPA in 2005 as an environmental scientist where she has worked in the Office of Water's Office of Ground Water and Drinking Water. She has served as a member of the Effective Rule Implementation Team managing the Disinfectants and Disinfection Byproducts Rule, Consumer Confidence Report, and Public Notice rule. Adrienne has also worked with EPA’s Check Up Program for Small Systems and the Water You Waiting For workforce video. Prior to working in EPA HQ, Adrienne held similar duties with EPA Region 1. Adrienne holds a B.S. in Environmental Science from Spelman College and M.E.M. from Duke University. Adrienne currently serves as the Sustainable Systems Team Leader and the National Capacity Development coordinator.

    Susanna Bains- Susanna joined EPA's Office of Ground Water and Drinking Water in January 2015. She is a Biologist for the Sustainable Systems Team at EPA Headquarters and coordinates Capacity Development and Asset Management initiatives. She received a B.S. in Biology from Samford University and an M.A. in Environmental Resource Policy from George Washington University.

    Daniel J. Murray, Jr., P.E., BCEE - Dan is a Senior Environmental Engineer with EPA ORD in Cincinnati, Ohio. He is currently on a long-term assignment to the Metropolitan Sewer District of Greater Cincinnati, where he is leading their efforts to identify, evaluate, and adopt innovative technologies for the management and control of wet weather flows. Dan started his career with EPA in 1977, and then left in 1987 to work for the Massachusetts Water Resources Authority, where he led their Combined Sewer Overflow (CSO) control program. In 1990, he returned to EPA and joined ORD. In 2005, he led EPA’s Aging Water Infrastructure Research Program, a 5-year initiative based on the investigation and demonstration of emerging and innovative technologies for condition assessment and rehabilitation. Dan holds a MS in Civil/Environmental Engineering from Northeastern University in Boston, MA, and is a registered Professional Engineer in Massachusetts and Ohio, and a Board Certified Environmental Engineer. He received EPA’s Gold Medal for Exceptional Service for his work in supporting the development of the Agency’s CSO Policy.

  • Legionella Control in Large Building Water Systems (October 25, 2016)
    EPA's document on Technologies for Legionella Control in Premise Plumbing Systems and CDC's National Toolkit for Legionella Control in Building Water Systems.

    Webinar Recording Exit

    Technologies for Legionella control in premise plumbing systems (Presented by César Cordero, EPA’s Office of Ground Water and Drinking Water). EPA presented its recently released document, "Technologies for Legionella Control in Premise Plumbing Systems: Scientific Literature Review," which provides information on the use and effectiveness of Legionella control strategies in premise plumbing systems. This non-regulatory document provides technical information on Legionella control in premise plumbing in buildings. It can help states and facility owners/operators make better informed decisions on Legionella control (The document does not recommend any particular technology nor the installation of treatment, and it does not address concerns related to Legionella risk associated with cooling towers).

    National toolkit for Legionella control in building water systems (Presented by Jessica Smith, Centers for Disease Control and Prevention). CDC presented its recently released toolkit, "Developing a Water Management Program to Reduce Legionella Growth and Spread in Buildings: A Practical Guide to Implementing Industry Standards." This toolkit is designed to help people understand which buildings and devices need a Legionella water management program to reduce the risk for Legionnaires’ disease, what makes a good program, and how to develop it. The toolkit aims to provide an easy-to-understand interpretation of ASHRAE Standard 188 to help building owners and managers evaluate the water system and devices in their building(s) to see if they need a program, and then develop an effective water management program if one is needed.

    About the Presenters

    César Cordero - César joined the Standards and Risk Reduction Branch (SRRB) of EPA’s OGWDW in 2007. During his time in SRRB, he has been involved in the review of the Revised Total Coliform Rule and the Long Term 2 Enhanced Surface Water Treatment Rule. He has also been involved in the development of the Contaminant Candidate Lists and has helped address issues related to emerging waterborne pathogens. César has a B.S. in Industrial Microbiology and an M.S. in Biology, both from the University of Puerto Rico-Mayaguez.

    Jessica Smith - Jessica is an epidemiologist on the Legionella team, which sits in the Respiratory Diseases Branch within the National Center for Immunization and Respiratory Diseases at CDC. She received her Bachelor's degree in archaeology from Boston University and her Master of Public Health in epidemiology from San Diego State University. Prior to joining CDC, Jessica most recently served as an epidemiologist with the Dallas County Department of Health and Human Services in Dallas, Texas. In her role in Dallas, she was primarily responsible for Legionnaires' disease outbreak investigations at healthcare facilities, contact tracing and monitoring during the first domestic cluster of Ebola virus disease, and coordinating the assessment of persons under investigation for Ebola and MERS. Her current work at CDC focuses on coordinating outbreak response efforts and developing epidemiologic tools to support state and local health departments in Legionella outbreak investigations.

  • Perfluorinated Chemicals: Analytics, Occurrence, and Treatment (September 27, 2016)
    Glass being filled with tap water

    Webinar Recording Exit

    Three talks were given on perfluorinated chemicals (PFCs) with an emphasis on perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). The first talk covered EPA’s analytical method for PFCs. This covered the approach, performance data, holding time studies, and contamination issues. The second talk covered source water issues for PFCs, including the impact of wastewater effluents. The third talk covered what is known from the literature regarding PFOA and PFOS treatment for the technologies commonly employed by drinking water facilities. For the technologies known to be effective, the applicability to drinking water treatment and a nation-wide cost evaluation was presented.

    PFOS and PFOA: Analytics (Presented by Jody Shoemaker, EPA’s Office of Research and Development). EPA Method 537 was developed for the analysis of perfluoroalkyl acids (PFAAs) in drinking water to address the occurrence monitoring needs under EPA’s Unregulated Contaminant Monitoring Regulation (UCMR). The method employs solid-phase extraction with analysis by liquid chromatography/tandem mass spectrometry (LC/MS/MS). This presentation described the challenges associated with developing an analytical method for 14 PFAAs as well as demonstrate Method 537 performance data.

    Evaluating occurrence and sources of PFAS to the environment (Presented by Marc Mills, EPA’s Office of Research and Development). Poly- and perfluorinated chemicals (PFAS) are used in many industrial and commercial applications. Understanding the occurrence of this class of chemicals is needed to better manage potential sources and to further characterize their fate and transport once released into the environment. Data from a number of monitoring studies and selected sources of PFAS was presented.

    Removing PFOA and PFOS from Drinking Water (Presented by Thomas Speth, EPA’s Office of Water). PFCs such as PFOA and PFOS have unique physical-chemical characteristics that influence how they are removed by drinking water treatment technologies. This presentation covered what is known from the literature regarding PFOA and PFOS treatment for the technologies commonly employed by drinking water facilities. The number of these technologies that are known to be effective is limited. For the technologies known to be effective, the applicability to drinking water treatment and a nation-wide cost evaluation was presented. Finally, additional treatment data needs was discussed.

    About the Presenters

    Jody Shoemaker, Ph.D. - Jody is a Research Chemist at EPA, and is a principal investigator for projects involving the development of analytical methods for potential drinking water contaminants. She has been involved in the development of seven drinking water methods, including EPA Method 537 for perfluorinated alkyl acids, and two ambient water methods for cyanotoxins. These methods are used for compliance purposes or for use in unregulated contaminant monitoring. Jody has a B.S. in chemistry from Notre Dame College of Ohio and a Ph.D. from the University of Florida.

    Marc A. Mills, Ph.D. - Marc is an Environmental Engineer at EPA, and is a principal investigator for projects characterizing the occurrence, transport, and fate of contaminants of emerging concern (CECs) and the management of contaminated sediments. He has been involved in the development of analytical methods for CECs for environmental samples in water, wastewater, solids, and tissues. These methods are used to characterize potential sources of CECs, their management in water, wastewater treatment, and new technology development. Marc has a B.S. in civil/environmental engineering from Texas A&M University and a M.S. and Ph.D. from the Texas A&M University.

    Thomas Speth, Ph.D., P.E. - Tom is a Professional Engineer who has worked in the field of water treatment research at EPA for 30 years. He has a Ph.D. in environmental engineering from the University of Cincinnati, a master’s degree in civil/environmental engineering from Michigan Technological University, and a bachelor’s degree in chemical engineering from Michigan Technological University. Tom is a member of the AWWA, ASCE, ACS and IHSS. He has served as Trustee for AWWA's Water Quality & Technology Division, Associate Editor for ASCE's Journal of Environmental Engineering, and as a member of Journal AWWA’s Editorial Advisory Board. He is currently the Chair of AWWA’s Water Science and Research Division. Tom served as Branch Chief of EPA’s Treatment Technology Evaluation Branch from May 2005 to January 2009. From January 2009 to September 2015, he served as Division Director of EPA’s Water Supply and Water Resources Division. He is currently on a detail with the OGWDW as a Senior Engineering Advisor assigned to the Flint Enforcement Team under the 1431 Imminent and Substantial Endangerment Order.

  • Removal of Multiple Contaminants: Biological Treatment and Ion Exchange (August 30, 2016)
    Glass being filled with tap water

    Webinar Recording Exit

    Combined ion exchange for removal of dissolved organic carbon (DOC) and hardness (Presented by Treavor Boyer, Arizona State University). This presentation will provide an overview of combined anion exchange and cation exchange (hereafter combined ion exchange) as a single process to simultaneously remove DOC and hardness. The motivation for pursuing combined ion exchange is to remove multiple contaminants with a single treatment process that generates a single waste or residual stream. Combined ion exchange results will be presented from laboratory experiments and an ongoing pilot plant study. The combined ion exchange process will also be discussed in terms of reactor configuration (i.e., fixed bed or completely mixed), process operating conditions, regeneration efficiency and waste disposal, and appropriateness for small systems.

    Capabilities of biological treatment for drinking water (Presented by Nicholas Dugan, EPA's Office of Research and Development). The biological treatment of drinking water is a process that has the potential to significantly reduce contaminant concentrations while minimizing the generation of treatment residuals. Contaminants of regulatory interest that have shown themselves amenable to removal through biological treatment include ammonia, nitrate, nitrite, and perchlorate. Biological treatment also has the capability to remove dissolved organic material that, though not directly regulated, is a precursor for the production of regulated disinfection byproducts (DBPs). This presentation will discuss the scientific fundamentals of biological treatment and present several case studies that serve to illustrate the capabilities of the process as well as operation and maintenance issues that need to be considered.

    About the Presenters

    Treavor Boyer, Ph.D. - Dr. Boyer is an Associate Professor at the School of Sustainable Engineering and the Built Environment, Arizona State University. where his research interest is water sustainability with many research projects on innovative applications of ion exchange technology. Dr. Boyer is the recipient of a National Science Foundation CAREER Award and his research has been sponsored by federal agencies including the Water Innovation Network for Sustainable Small Systems Center (WINSSS). WINSSS is one of two National Centers for Innovation in Small Drinking Water Systems that received EPA grants in 2013 to perform innovative research in small to medium sized drinking water systems. Dr. Boyer earned his Ph.D. and M.S. in environmental engineering from the University of North Carolina at Chapel Hill, and his B.S. in chemical engineering from the University of Florida.

    Nicholas Dugan, P.E. - Nick is an engineer in Nick is an environmental engineer with EPA ORD's National Risk Management Research Laboratory in Cincinnati, Ohio, where he specializes in drinking water treatment. In addition to his work with cyanobacteria and cyanobacterial toxins, he has performed or supervised bench- and pilot-scale studies to evaluate the removal of nitrate, nitrite, ammonia, perchlorate, and disinfection byproduct precursors through biological drinking water treatment processes.

  • Lead and Copper: Sampling and Water Quality Challenges (July 26, 2016)
    Glass being filled with tap water

    Webinar Recording Exit

    Lead and copper tap sampling requirements and procedures (Presented by Edward Viveiros, EPA's Office of Water). This presentation provided a review of Lead and Copper Rule (LCR) tap water sampling requirements for small systems, including site selection and sample collection. It also provided clarification on recommended tap sampling procedures relating to aerators, pre-stagnation flushing and bottle configuration. The presentation will also point to instructional resources available to small systems.

    Flint Michigan: water quality challenges and moving forward (Presented by Darren A. Lytle, EPA's Office of Research and Development). This discussion included a timeline of the key events in Flint, MI, as related to the elevated levels of lead in the drinking water. The different Flint drinking water sources involved were presented, along with changes in water quality parameters that were impacted by the different source waters. The crisis led to the establishment of the EPA Flint Technical Advisory Committee, and the task force recommendations was presented. In addition, sampling efforts that have taken place in Flint to-date were discussed, as well as planned pipe scale sampling associated with experimental pipe loop test rigs and excavated lead service lines. Other efforts underway include improving distribution system (DS) modeling and a DS flushing program. The results of a filter study were presented along with current corrosion control optimization efforts.

    About the Presenters

    Edward Viveiros - Edward is an environmental engineer at EPA's Office of Ground Water and Drinking Water, Drinking Water Protection Branch, where he serves as an implementation lead for the Lead and Copper Rule. Prior to that, he was an environmental consultant with Eastern Research Group. While there, he provided analytical support to EPA in the areas of wastewater management and chemical policy for seven years. He holds a Master's and a Bachelor's degree in chemical engineering from Northeastern University in Boston, MA.

    Darren A. Lytle, Ph.D., P.E. - Dr. Lytle is an environmental engineer for the EPA's Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division where he serves as the Acting Branch Chief for the Treatment Technology Evaluation Branch. Since beginning work at EPA in 1991, Dr. Lytle’s primary goal has been to research the quality of drinking water. Over the years, he has investigated and published works on drinking water systems, including work on distribution system corrosion control and water quality (e.g., red water control, lead and copper corrosion control); filtration (emphasis on removal of particles, and microbial contaminants and pathogens from water); biological water treatment; and iron and arsenic removal.

  • Revised Total Coliform Rule (RTCR) for Small Systems (June 28, 2016)
    Drinking water pipe with soil intrusion

    Recording coming soon.

    Federal RTCR requirements applicable to small systems (Presented by Cindy Y. Mack, EPA’s Office of Water). This presentation discussed the federal RTCR requirements applicable to small systems serving less than or equal to 1,000 persons. Routine, additional routine, and repeat sampling requirements, and events that trigger a Level 1 or Level 2 assessment were addressed. The presentation also included the actions that public water systems (PWSs) should take once an assessment is triggered.

    RTCR implementation from a state perspective: trials and triumphs (Presented by Mark J. Verbsky, Ohio EPA's Division of Drinking and Ground Waters, Southwest District Office.) . Implementation of the RTCR has presented most primacy agencies across the United States with a variety of challenges. Seasonal water system requirements, treatment technique triggers, Level 1 and Level 2 assessments, an E. coli maximum contaminant level (MCL) instead of a total coliform MCL, and a whole host of additional issues and protocols have been keeping primacy agencies very busy over the past three years. This presentation gave a brief glimpse into what Ohio EPA experienced and what has been developed in order to implement the RTCR in Ohio.

    About the Presenters

    Cindy Y. Mack - Cindy is an Environmental Protection Specialist and has worked in EPA’s Office of Ground Water and Drinking Water since 2002. She is currently the National Implementation Lead for the RTCR and Senior Project Manager of the Interstate Carrier Conveyance Program. Cindy has a B.S. in Public Health from the University of Massachusetts and a M.P.H. from Johns Hopkins University. She has over 20 years of experience working in both the private and public sectors in program/policy development and implementation. Specific policy areas have included PWS microbial rules; combined sewer/sanitary sewer overflows; and environmental justice, among others. In addition, Cindy was one of the principal rule writers of the Aircraft Drinking Water Rule..

    Mark J. Verbsky, R.S. - Mark is entering his 28th year in the public health field, with over 22 years at the Ohio EPA as a PWS inspector. He is a Registered Sanitarian and a certified Class 3 water treatment plant operator in the state of Ohio. His primary focus has been on small PWSs, and he is an active member of multiple workgroups and the American Water Works Association. This is Mark’s second time revising the Total Coliform Rule for Ohio: first from 1996 to 2000 and again from 2013 to present

  • Disinfection Byproducts (DBPs): Regulatory Issues and Solutions (June 14, 2016. Originally scheduled for April 26))
    Two children drinking from water fountain

    Recording coming soon.

    Stage 2 disinfectant byproducts regulatory review and implementation challenges (Presented by Michael Finn, EPA's Office of Water). This presentation reviewed the Stage 2 Disinfectant and Disinfection Byproducts Rule (DBPR) monitoring and reporting requirements, Stage 2 monitoring plans and plan revisions, reduced and increased monitoring, consecutive system issues, and operational evaluations. It also reviewed the treatment technique requirements of the Stage 1 DBPR that PWSs must continue to satisfy.

    Small System disinfection byproducts challenges and solutions in Washington State (Presented by Jolyn Leslie, Washington State Department of Health). Washington State has over 1,100 small community and non-transient non-community water systems that are required to comply with the DBP Rule and serve less than 3,300 population. Most of the DBP MCL exceedances in the State have been in these small systems. These systems include both surface water and groundwater sources. This presentation provided a summary of some of the water quality challenges facing these small systems and highlighted a few success stories.

    About the Presenters

    Michael Finn, P.E. - Michael is an Environmental Engineer with the Office of Groundwater and Drinking Water, Drinking Water Protection Branch. He joined EPA in 2001 to work on the development of the Long Term 2 Enhanced Surface Water Treatment Rule, the Stage 2 Disinfection Byproducts Rule and the Groundwater Rule and the related guidance documents. Michael is currently working with states and public water systems on the implementation of those rules, microbial water treatment issues, alternative treatment technologies and water availability and water efficiency in public water systems. Prior to coming to EPA, he was with the California drinking water program as a field engineer in the San Francisco Bay area. Michael holds a Bachelor of Science in Environmental Resources Engineering from Humboldt State University in Arcata, CA. He is a licensed professional engineer in California and Maryland and a certified water treatment operator.

    Jolyn Leslie, P.E. - Jolyn is a regional engineer for the Washington State Department of Health Office of Drinking Water. She is a civil engineer with over 16 years of experience working with water systems. First as a Peace Corps volunteer in Honduras working on mainly small gravity fed water systems. For the last 14 years, she has been a regional engineer and is responsible for implementing the State’s Drinking Water Program in her assigned geographic region. She is also the regional DBP lead for the Northwest Regional Office. She is an active member of AWWA and volunteers both domestically and internationally for Water For People.

  • Responding to Harmful Algal Blooms, Optimization Guidelines, and Sampling for Utilities (May 31, 2016)
    Harmful algal bloom on Ohio River at Ironton drinking water facility intake.

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    Removal capabilities of common treatment processes and facility evaluation strategies and performance improvement (Presented by Nicholas Dugan, EPA's Office of Research and Development). Harmful algal blooms (HABs), which include blooms of cyanobacteria, pose particular challenges and questions for small drinking water systems. Two of the most important are: “how well equipped is my facility to handle cyanobacterial cells and the toxins that may be released?” and “how can I improve my facility’s performance within rigid financial constraints?” This presentation reviewed the removal capacities of common processes used in drinking water treatment, presented a strategy for evaluating an existing treatment facility and discussed how to use this information to improve a facility’s performance.

    Source and finished water monitoring options and their limitations and benefits (Presented by Heather Raymond, Ohio EPA) . There are a variety of tools that can be utilized to monitor a water system’s source and finished waters for HABs. Monitoring data can help a water system develop appropriate reservoir management strategies and optimize treatment for cyanotoxin removal. This presentation covered source and finished water monitoring options and their limitations and benefits. It also provided a few examples of how water systems in Ohio are using monitoring data to both focus reservoir management and optimize treatment following source and finished water cyanotoxin detections.

    About the Presenters

    Nicholas R. Dugan, P.E. - Nick is an environmental engineer with U.S. EPA’s Office of Research and Development/National Risk Management Research Laboratory in Cincinnati, Ohio, where he specializes in drinking water treatment. In addition to his work with cyanobacteria and cyanobacterial toxins, he has performed treatment studies to evaluate the control of cryptosporidium, nitrate, perchlorate, pesticides, and disinfection byproduct precursors.

    Heather Raymond - Heather has almost 20 years of experience in Ohio EPA’s Division of Drinking and Ground Waters where she currently serves as the Harmful Algal Bloom Coordinator. She helped develop Ohio’s Harmful Algal Bloom Monitoring and Reporting Rules, the State of Ohio Recreation and Public Water System HAB Response Strategies, and HAB-related public water system guidance documents. She also co-teaches a practical workshop on HABs at Ohio State University's Stone Laboratory. She has helped water systems effectively respond to HABs in both their raw and finished drinking water.

  • Point of Use/Point of Entry (POU/POE) Treatment Devices (March 29, 2016)
    Child drinking water from a glass

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    Household water systems: Tailoring treatment alternatives to contaminants in groundwater and distribution systems (Presented by Craig Patterson, EPA's Office of Research and Development). This presentation highlighted research case studies on household water treatment systems. EPA’s ORD has been evaluating the performance of POU/POE treatment systems designed for use in homes and small businesses for many years. Research studies will highlight the capabilities of kitchen sink membrane and carbon filters and their application to a wide variety of chemical and microbiological contaminants in well and tap waters. The research studies were conducted at EPA’s Test and Evaluation Facility and at field locations.

    Point of use/point of entry case studies (Presented by Cynthia Klevens, New Hampshire Department of Environmental Services). About 1 in 5 bedrock wells in New Hampshire have unsafe levels of Arsenic, while others exceed the standards for Uranium, Radium and/or Gross Alpha contaminants. Approximately 90% of NH’s non-transient systems serve less than 1,000 people, and rely on private septic systems for wastewater disposal. This presentation included state regulatory requirements along with case studies where POU / POE treatment was approved as the best alternative to achieve water system compliance, due to the inability of community systems to discharge residuals onsite, or the cost-effectiveness of treating only the potable water needs for very small NTNC systems.

    About the Presenters

    Craig Patterson, P.E. - Craig is an environmental engineer with EPA's Office of Research and Development. He has over 35 years of experience with federal environmental programs and environmental consulting firms. Over the past 13 years, Craig’s research emphasis has been on drinking water treatment technologies for small communities of less than 500 people. His research has focused mainly on emerging and innovative water treatment technologies in support of EPA regulatory requirements including household water system studies. This effort has included collaborative field studies on a wide variety of surface and groundwater sources with researchers in EPA Regions, states, local health departments, water utilities, private industry, and academia.

    Cynthia Klevens, P.E. - Cynthia is a chemical engineer with the New Hampshire Department of Environmental Services’ Drinking Water and Groundwater Bureau. She has 30 years’ experience in the environmental field, with half of that in drinking water treatment. Cynthia joined state government in 2005 to assist small public water systems and private wells with water treatment for arsenic, radionuclides and disinfection byproducts. Prior to that, she worked in the consulting industry. Cynthia also served as Technical Advisor for EPA’s Arsenic Demonstration Projects, and is a member of the NSF Joint Committee for Drinking Water Treatment Units.

  • Consumer Confidence Reports: Electronic Delivery and Best Practices (February 23, 2016)
    Glass being filled with tap water

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    The Consumer Confidence Report (CCR) Rule is a National Primary Drinking Water Regulation that requires community water systems (CWSs) to create annual drinking water reports and distribute them to customers and consumer by July 1st each year. Among other requirements, the CCRs contain information about detected contaminants and if there were any health-based or monitoring violations in the past year. In 2012 EPA conducted a Retrospective review of the CCR Rule in which EPA interpreted the language in the regulation to allow electronic delivery of the CCR if certain requirements are met. CWSs serving 100,000 or more persons must also post their current year’s report to a publicly accessible site on the Internet. In this webinar we will review traditional and electronic delivery methods for the CCR as well as best practices for formatting the CCR. We will also highlight the CCR iWriter, a tool that walks a CWS through a series of questions and produces a CCR. Lastly we will highlight improvements to the CCR Where You Live Webpage where a CWS can link the URL to their CCR that is already posted online to the EPA website.

    About the Presenters

    Jamie Harris - Jamie has been in the field of hydrology for more than 20 years. Her experience is related to water quality, water supply and regulatory issues both related to the Clean Water Act and the Safe Drinking Water Act. Jamie has worked as an environmental consultant overseas as well as in Maryland. She has also worked for the Southern Nevada Water Authority and Maryland Environmental Service at Maryland Department of the Environment. At EPA Jamie oversees the implementation of a number of the National Primary Drinking Water Regulations including the CCR Rule, the Public Notification (PN) Rule, and the Chemical Phase Rules which includes over 65 Inorganic and Organic Contaminants.

    Adrienne Harris - Adrienne joined EPA in 2005 as an environmental scientist. She has worked in EPA’s Office of Water since 2009. She has served as a member of the Effective Rule Implementation Team managing the Stage 1 Disinfectants and Disinfection Byproducts Rule (DBPR), Stage 2 DBPR, CCR Rule and PN Rule. Prior to working in EPA Headquarters, Adrienne held similar duties as an environmental scientist with EPA Region 1. Adrienne holds a B.S. in Environmental Science from Spelman College and a M.E.M. in Environmental Management from Duke University. Adrienne currently serves as the Sustainable Systems Team Leader.

  • Uranium Standards in Drinking Water and Removal Technologies Research at Small Community Water Systems (February 2, 2016)
    Glass being filled with tap water

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    Uranium and health effects and uranium in drinking water standards. (Presented by Samuel Hernandez, EPA’s Office of Water). Community water systems must comply with the maximum contaminant levels established by the Radionuclides Rule for radium-226, radium-228, gross alpha particle activity, beta particle and photon radioactivity, and uranium. The Rule intends to reduce the consumer’s long term exposure to radiation in drinking water, thereby reducing the risk of cancer and improving public health protection. Uranium is a naturally occurring radioactive element and is present in virtually all soil, rock and ground water sources. Long-term exposure to uranium in drinking water in excess of EPA’s standard may result in kidney toxicity. This presentation will include an overview of uranium and health effects, followed by uranium in drinking water standards, including specifics about monitoring requirements, determining compliance, and violations.

    Removal of uranium from drinking water by small system treatment technologies. (Presented by Thomas Sorg, EPA’s Office of Research and Development). Radionuclides, such as uranium, occur naturally as trace elements in rocks and soils; thus, they can be found in dissolved forms in ground waters, some of which are used as sources of drinking water. This presentation will include a short discussion of basic uranium chemistry followed by a discussion on small-system treatment technologies that are effective for uranium removal. These treatment technologies include coagulation/filtration, lime softening, anion exchange, activated alumina, and reverse osmosis. Both pilot- and full-scale treatment system information will be covered. The presentation will conclude with a discussion on residual disposal.

    About the Presenters

    Samuel Hernandez, P.E. - Sam is an environmental engineer with EPA’s Office of Ground Water and Drinking Water (OGWDW). He currently serves as the Drinking Water Radionuclides Rule manager, which includes responding to inquiries about the principles and applicability of the rule and providing support to states and to other EPA offices regarding the technical basis of the rule. Prior to joining EPA, Sam worked at the U.S. Nuclear Regulatory Commission as an environmental project manager where he coordinated the development and publication of environmental impact statements and safety evaluation reports related to the renewal of operating licenses of nuclear power plants. Sam has a B.S. in Chemical Engineering from the University of Puerto Rico and a M.S. in Environmental Engineering from the University of Maryland.

    Thomas Sorg, PE, BCEE - Tom has over 51 years of experience with federal environmental programs. His experience includes the past 42 years with the drinking water research and development program of EPA, and 25 years as Chief of the Inorganics and Particulate Control Branch of the Drinking Water Research Division. Tom’s research emphasis has been on drinking water treatment technology for the removal of inorganic and radionuclide contaminants from water supplies, including the removal of arsenic. During the past 12 years, his research has focused mainly on treatment technologies to remove arsenic from drinking water in support of the revised arsenic MCL of 10 μg/L. This effort has included oversight of the EPA Arsenic Removal Full-Scale Demonstration Program.p>

2015 Webinar Recordings

Recordings of the 2015 webinars are available below and are hosted on the Association of State Drinking Water Administrators' (ASDWA) website. Exit Continuing education contact hour certificates cannot be offered for watching previously recorded webinars.

  • Reduction of Lead in Drinking Water (December 15, 2015)
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    Identifying and solving lead issues from water systems with materials/device replacement in drinking water system configurations (Presented by Michael Schock, EPA’s Office of Research and Development). Identifying and assessing lead contamination and exposure potential in single-family residences is difficult enough, but doing the same kind of assessment and remediation in buildings, schools, and day care centers is even more challenging. It is of particular importance because of the absence of a threshold lead concentration for adverse health effects, as well as the elevated risk to infants and children. Wide variations of seasonal and diurnal water usage patterns, relatively low total water flow, and complex small-diameter piping networks having multiple lead-containing devices located in series in line and at multiple consumption endpoints, combine to make addressing lead contamination in building systems highly challenging. There is rarely, if ever, a “representative” sampling tap. This presentation reviews the nature of lead and copper occurrence and relationships to water quality and use, and then focuses on sampling strategies to identify and isolate the occurrence of leaded materials in building drinking water system configurations.

    Tool for identifying drinking water system and plumbing products that meet the lead free requirement of the Safe Drinking Water Act (Presented by Michelle Latham, EPA’s Office of Research and Development). In 2014, the definition of lead free in Section 1417 of the Safe Drinking Water Act (SDWA) was changed from not more than 8% lead content to not more than a weighted average of 0.25% lead with respect to the wetted surfaces of pipes, pipe fittings, plumbing fittings, and plumbing fixtures. Although there is no mandatory federal requirement for lead free product testing or third-party certification under the SDWA as of December 2015, consumers can increase their level of confidence by purchasing products that have been certified as meeting the SDWA lead free requirement. Because there is not a single, uniform mark for identifying certification to lead content, it can be difficult to determine if a product is lead free. This presentation highlights a tool designed to help consumers identify lead free drinking water system and plumbing products that have undergone third-party certification testing.

    About the Presenters

    Michael R. Schock - Mike is a chemist with ORD’s National Risk Management Research Laboratory. He has spent 30 years of his career conducting drinking water research, including both inhouse and field research into drinking water treatment with emphasis on metal release mechanisms and predictive modeling, corrosion control, pipe scale/sediment and inorganic water analysis, contaminant accumulation and water quality in domestic plumbing and municipal distribution systems, and development of sampling strategies for metal contamination in building and premise plumbing. He has served on numerous advisory committees and has received more than 20 publication and research awards from EPA, New England Water Works Association, and the American Water Works Association, including the 2011 A.P. Black Research Award for lifetime achievement. Mike has a B.S. in Geology from Wright State and a M.S. in Geology from Michigan State.

    Michelle L. Latham - Michelle is a biologist with ORD’s Safe and Sustainable Water Resources Research Program, where she serves as the communications liaison. Michelle focuses on technical communication of research results and the facilitation of outreach activities on topics such as small drinking water systems, drinking water and wastewater treatment, aging water infrastructure, and source water protection. She also serves as a stakeholder advisory board member on communications and outreach committees for the University of Cincinnati. Michelle has a B.L.A, a B.S. in Biology, and a M.Ed. from Xavier University, an A.A.S. from Shoreline, and C.G.s from the Naval School of Health Sciences.

  • Treatability Database, Cost Models, and other Tools for Water Systems (November 24, 2015)
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    USEPA Cost Models and Treatability Database (Presented by Dr. Thomas F. Speth, EPA’s Office of Water). EPA recently developed new unit cost estimating models for drinking water treatment processes using a work breakdown structure (WBS) approach. The models estimate costs for a national regulation, and also provide individual water treatment facilities with tools to estimate costs for different compliance options. Assumptions and unit costs are clearly documented, resulting in a transparent process that stakeholders could easily understand and use. Specific features relevant to small systems are incorporated in the models and will be highlighted in this presentation. Furthermore, the integration of cost model parameter needs with EPA’s Drinking Water Treatability Database (TDB) will also be discussed. The TDB will become a ready source for treatability data for various contaminants/treatment combinations, and it will contain process design and operating data to facilitate WBS use for cost estimation.

    Web-based applications to simulate drinking water inorganic chloramine chemistry (Presented by Dr. David Wahman, EPA’s Office of Research and Development). For almost 30 years, a reaction scheme typically termed the Unified Model has existed that describes inorganic chloramine formation and decay over a range of conditions applicable to drinking water. Even though a reasonable reaction scheme has existed, a widely and freely accessible implementation of the Unified Model has not, largely because of the requirement to program and solve the reaction scheme, preventing model implementation in a user-friendly environment where proprietary software or user modeling experience was not required. Two web-based applications (WBAs) relevant to drinking water practice were developed to (1) simulate inorganic chloramine formation and subsequent stability, including a simple inorganic chloramine demand reaction for organic matter and (2) generate chlorine breakpoint curves. The WBAs provide the user a free, interactive environment to explore and understand fundamental inorganic chloramine chemistry where the only requirement is a web browser and Internet connection to access the WBAs’ web pages. The WBAs’ implementation along with example uses will be presented.

    About the Presenters

    Thomas F. Speth, Ph.D., P.E. - Dr. Speth is a Professional Engineer who has worked in the field of water-treatment research in EPA/ORD for 29 years. He has a Ph.D. in Environmental Engineering from the University of Cincinnati, an M.S. in Civil & Environmental Engineering from Michigan Technological University, and a B.S. in Chemical Engineering from Michigan Technological University. Dr. Speth is a member of the AWWA, ASCE, ACS, and IHSS. He has served as Trustee for AWWA's Water Quality & Technology Division, Associate Editor for ASCE's Journal of Environmental Engineering, and as a member of Journal AWWA’s Editorial Advisory Board. He is currently a Trustee of AWWA’s Water Science and Research Division. He has served as Branch Chief of ORD’s Treatment Technology Evaluation Branch from May 2005 to January 2009. From January 2009 to September 2015, he served as Division Director of ORD’s Water Supply and Water Resources Division. He is currently on a detail with EPA’s Office of Ground Water and Drinking Water as a Senior Engineering Advisor.

    David G. Wahman, Ph.D., P.E. - Dr. Wahman is an Environmental Engineer with EPA’s ORD in Cincinnati, Ohio. He is a registered Professional Engineer and received his B.S. in Civil Engineering from Rose-Hulman Institute of Technology, an M.S.E. in Environmental and Water Resources Engineering, and a Ph.D. in Civil Engineering from the University of Texas at Austin. Following graduation, he was a Post-Doctoral fellow at the EPA before accepting a permanent position. He has a special interest in the application of molecular based tools, modeling, and biological treatment to address drinking water treatment and distribution system issues, and his research areas include biological removal of disinfection by-products from drinking water, biological drinking water treatment, distribution system nitrification, and chloramine chemistry.

  • Decentralized High-Rate Wastewater Treatment of Peak Wet Weather Flows (October 27, 2015)
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    Compendium of Performance Data for Facilities that Blend during Wet Weather (Presented by Kevin Weiss, EPA’s Office of Water). There are currently major knowledge gaps in the literature for the nature of effluent from water resource recovery facilities/wastewater treatment facilities that use blending to manage wet weather flows. There are also knowledge gaps for potential human health and water quality impacts associated with discharges of blended effluent. To help fill these gaps, EPA is developing a compendium of technical information to 1) provide an overview of the spectrum of design and operational options associated with treatment of wet weather flows, and 2) highlight performance data from facilities that blend, including those that provide auxiliary treatment and those that do not. To facilitate the development of the compendium, EPA is interested in obtaining published and unpublished data that describe the performance of facilities that blend and the performance under wet weather conditions of facilities that do not blend. In addition, EPA is interested in identifying additional sources of information that describe the potential impacts of blended discharges. This presentation will summarize the results of this effort.

    Evaluation of a Decentralized, High-Rate Wastewater Treatment Plant for Wet Weather Flows (Presented by Presented by Daniel J. Murray, Jr., P.E., BCEE, EPA’s Office of Research and Development). Urban wet weather flows into municipal wastewater collection systems, either intentional or unintentional, are significant challenges for wastewater utilities. During rain events, these dynamic and often unpredictable flows can result in rapid changes in the flow rates and volumes of wastewater that must be collected and treated. In many cases, high flow rates in collection systems can exceed system carrying capacity and result in a sanitary sewer overflow (SSO) or combined sewer overflow (CSO). In order to reduce or eliminate SSOs and CSOs, utilities are increasingly employing high rate treatment (HRT) systems. This project focused on evaluating the performance of HRT systems for removing contaminants related to wet weather flows. Specifically, this project evaluated the performance of ballasted flocculation technology combined with ultraviolet (UV) disinfection technology. Between January 2013 and May 2014, fifteen wet-weather related sampling events were performed at a wet weather treatment facility in southwest Ohio. This presentation will summarize the results of this effort.

    About the Presenters

    Kevin Weiss - Kevin is a Chemical Engineer with the Office of Water, Office of Wastewater Management, Water Permits Division. He joined the Water Permits Division in 1987, where he works on municipal wet weather issues and integrated planning. During this time, he has worked on the storm water regulations (Phase I), draft SSO/CMOM regulations, blending policies, the Integrated Planning Framework, and the November 24, 2014 Financial Capability Assessment Framework. Kevin holds a Master of Science in Chemical Engineering from Carnegie-Mellon University in Pittsburgh, PA, and a J.D. from George Washington University in Washington, DC.

    Daniel J. Murray, Jr., P.E., BCEE - Dan is a Senior Environmental Engineer with the Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division. He started his career with EPA in 1977, where he worked in EPA’s Regions 5 and 1. In 1987, he left EPA to work for the Massachusetts Water Resources Authority, where he led the Authority’s Combined Sewer Overflow (CSO) control program. In 1990, he returned to EPA where he joined ORD in Cincinnati, OH. In 1995, he received the Gold Medal for Exceptional Service, EPA’s highest honor, for his work in supporting the development of the Agency’s CSO Policy. In 2005, he led the development and implementation of EPA’s Aging Water Infrastructure Research Program, a 5-year initiative based on the strategic asset management framework and the investigation and demonstration of emerging and innovative technologies. Dan holds a Master of Science in Civil/Environmental Engineering from Northeastern University in Boston, MA, and is a registered Professional Engineer in Massachusetts and Ohio, and a Board Certified Environmental Engineer.

  • Ultraviolet (UV) Disinfections Systems: Treatment of Groundwater for Small/Medium Sized Water Utilities (September 29, 2015)
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    UV Disinfection - A treatment option for Small and Medium Sized Systems for SDWA Compliance (Presented by Michael Finn, EPA’s Office of Water). Recent research, technology advancements and new drinking water regulations have brought significant attention to UV disinfection as an option for microbial treatment for small and medium sized public water systems. UV disinfection is an effective treatment for the inactivation of Cryptosporidium in treatment of surface water supplies. Surface water systems that are required to provide additional Cryptosporidium treatment based on the Long Term 2 Surface Water Treatment Rule may choose UV disinfection as a strategy to meet treatment requirements. The majority of public water systems (>90%) serve ground water and the majority (>90%) of ground water systems serves less than 3300 people. The Ground Water Rule requires treatment for viruses for ground water sources found to be vulnerable to fecal contamination. UV disinfection can provide effective virus treatment and appropriately sized UV disinfection systems for small water systems have become more available. To ensure effective treatment is being provided, validation of the UV doses provided and monitoring of operational measures to ensure effective treatment are needed.

    Evaluation of an Innovative Approach to Validation of UV Reactors for Disinfection in Drinking Water Systems (Presented by Jeffrey Adams, EPA’s Office of Research and Development). Ultraviolet (UV) disinfection is an effective process for inactivating many microbial pathogens found in source waters with the potential as stand-alone treatment or in combination with other disinfectants. EPA provided guidance on the validation of UV reactors nearly a decade ago; however, there remains no standard approach for validating UV reactors to meet a 4-log (99.99%) inactivation of viruses. Because of lessons learned over the years, validation practices have been modified and changes in operation and monitoring of UV systems need to be addressed. Of particular challenge for medium-pressure UV is the monitoring of low-wavelength germicidal contributions for appropriate crediting of disinfection under varying reactor conditions of quartz sleeve fouling, lamp aging, and changes in UV absorbance of the water over time. This presentation will discuss EPA’s evaluation, in partnership with state and industry collaborators, of new approaches for validating UV reactors to meet groundwater and surface water pathogen inactivation, including viruses for low-pressure and medium-pressure UV systems.

    About the Presenters

    Michael Finn, P.E. - Michael is an Environmental Engineer with the Office of Groundwater and Drinking Water, Drinking Water Protection Branch. He joined EPA in 2001 to work on the development of the Long Term 2 Enhanced Surface Water Treatment Rule, the Stage 2 Disinfection Byproducts Rule and the Groundwater Rule and the related guidance documents. Michael is currently working with states and public water systems on the implementation of those rules, microbial water treatment issues, alternative treatment technologies and water availability and water efficiency in public water systems. Prior to coming to EPA, he was with the California drinking water program as a field engineer in the San Francisco Bay area. Michael holds a Bachelor of Science in Environmental Resources Engineering from Humboldt State University in Arcata, CA. He is a licensed professional engineer in California and Maryland and a certified water treatment operator.

    Jeffrey Adams - Jeff is an environmental engineer with ORD’s National Risk Management Research Laboratory, Water Supply and Water Resources Division. Over the last decade he managed EPA’s Environmental Technology Verification Drinking Water Systems Center, which conducted studies evaluating the performance and sustainability of water treatment and monitoring technologies, including filtration processes, membrane separation, adsorptive media, UV and disinfection processes, and advanced oxidation technologies. Jeff has managed, authored, and co-authored numerous technical articles and has served on American Water Works Association (AWWA) technical committees and AWWA Research Foundation project advisory committees. He currently serves as the assistance agreement manager for EPA supported Water Research Foundation and Water Environment Research Foundation research studies. He received a M.S. and B.S. in Civil/Environmental Engineering from the University of Cincinnati.

  • Distribution Operation Options for Small Systems to Address Disinfection Byproducts (August 18, 2015)
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    Evaluation of cost-effective aeration technology solutions to address total trihalomethane (TTHM) compliance. (Presented by Dr. Jonathan Pressman, EPA’s Office of Research and Development). This presentation will provide the results of an evaluation of cost-effective aeration technology solutions to address TTHM compliance at a water treatment plant clearwell. Prior to the evaluation, water utility systems with known TTHM MCL exceedances that lacked the technical expertise or financial ability to address the problem were identified. One of the systems was then selected based on source water quality, infrastructure type, and operations characteristics for the comparable aeration evaluation and testing. To assess their effectiveness at reducing TTHMs, multiple aeration technologies, including surface and spray aeration technologies, were evaluated to assess the rate of formation of DBPs through the system’s clearwell.

    Operational strategies for controlling the formation of DBPs in distribution systems (Presented by Alison Dugan, EPA’s Office of Water). There are several operational strategies which small system operators (who utilize free chlorine) can use to control, or minimize, the formation of disinfection byproducts (DBP) in their distribution system; these strategies are mainly associated with reducing water age in the system through strategic flushing, modifying tank operations and rerouting water. Equally important to controlling DBPs, is monitoring to develop an understanding of the issue, including understanding DBP levels entering the distribution system (i.e., either from the water treatment plant or through a master meter, for a consecutive system) and factors that impact DBP levels in the system. Within the system, oftentimes surrogate parameters can provide an indication of DBP formation and help operators assess the impact of their efforts to control DBPs. This presentation will discuss all of these topics.

    About the Presenters

    Jonathan Pressman, Ph.D., P.E. - Dr. Pressman is a research environmental engineer with ORD’s National Risk Management Research Laboratory, Water Supply and Water Resources Division, Treatment Technology Evaluation Branch located in Cincinnati, Ohio. His research interests include characterizing natural organic matter in drinking water sources with particular emphasis on disinfection byproduct formation, membrane processes for both drinking water treatment and natural organic matter concentration, and nitrification in drinking water distribution systems. Nitrification research includes special interests in molecular genetics and microbiological engineering. Dr. Pressman has a B.S. in civil engineering from Cornell University and a M.S. and Ph.D. in civil engineering from the University of Texas at Austin. He is a registered professional engineer in Ohio and Texas.

    Alison Dugan - Alison is an environmental engineer with EPA’s Technical Support Center, in Cincinnati, Ohio. As a member of the Agency’s drinking water treatment optimization team, one of her primary responsibilities is to develop approaches for water systems to optimize their existing operations and infrastructure to control disinfection byproduct formation in the plant and distribution system, while not compromising other treatment objectives. The optimization tools and approaches developed by the team are field-tested with small- to medium-sized water systems, and then demonstrated to the states that participate in one of the four EPA Regional Area-Wide Optimization Programs (AWOPs).

  • Corrosion Control for Drinking Water Systems (July 28, 2015)
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    Treatment, control, and assessment strategies for lead and copper release into drinking water (Presented by Michael R. Schock, EPA’s Office of Research and Development). This presentation is an overview of the most important water treatment strategies for the control of lead and copper release from drinking water plumbing materials and components. In addition to lead, copper, and combined treatment, this presentation also covered sampling to find lead and copper, the stagnation behavior of copper versus that of lead, the impact of pipe scale aging on copper release, and complications of metal contamination arising from accumulated deposits of iron, manganese, and aluminum on the lead or copper pipe surfaces. An overview on the nature of scales and deposits on lead and copper pipes in real water systems, which often differ from classical corrosion theory, and the implications for metal release control by requiring the addressing optimization of interacting treatment processes to assure simultaneous compliance was also presented.

    Requirements for optimizing corrosion control treatment (Presented by Brian D'Amico, EPA’s Office of Water). This presentation provided an overview of the existing requirements regarding Optimizing Corrosion Control Treatment in EPA’s Lead and Copper Rule regulation, including monitoring requirements and corrosion control treatment methods.

    About the Presenters

    Michael R. Schock - Mike is a chemist with ORD’s National Risk Management Research Laboratory in Cincinnati, OH. He has spent 30 years of his career conducting drinking water research, including both in-house and field research into drinking water treatment with emphasis on metal release mechanisms and predictive modeling, corrosion control, pipe scale/sediment and inorganic water analysis, contaminant accumulation and water quality in domestic plumbing and municipal distribution systems, and development of sampling strategies for metal contamination in building and premise plumbing. He has served on numerous advisory committees and has received more than 20 publication and research awards from EPA, New England Water Works Association, and the American Water Works Association, including the 2011 A.P. Black Research Award for lifetime achievement.

    Brian D'Amico - Brian is a chemical engineer who has spent the last ten years at EPA working on water regulations for both the Safe Drinking Water Act (SDWA) and the Clean Water Act. He is currently the team lead for the Regulations Implementing Section 1417 of the SDWA. Prior to his transition to drinking water, Brian worked on several effluent guidelines, including airport deicing and unconventional oil and gas.

  • Biological and Microbial Aspects of Septic System Pollution (June 30, 2015)
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    Fecal source identification of septic system pollution in receiving waters (Presented by Dr. Orin Shanks, EPA’s Office of Research and Development). In the United States, approximately 20% of all households are served by septic wastewater treatment systems. It is common for septic systems to fail due to age, design, poor operation and maintenance, and/or physical damage due to plant root infiltration. Direct discharge of waste into receiving waters with minimal or no treatment can pose a serious health risk when an impacted water source is used for recreation, a drinking water reservoir, irrigation, or aquaculture applications. This presentation 1) reviews the microbial composition of septic waste, 2) demonstrates the use of molecular technologies combined with geographic information system land use data to identify fecal pollution from failing septic systems in receiving waters, and 3) provides an overview of current EPA research activities on fecal source identification aspects of septic system pollution.

    Advanced Onsite Wastewater Treatment Systems: Table Rock Lake Demonstration Project (Presented by Dr. Alfonso Blanco, EPA’s Office of Water). This presentation discusses a demonstration project for Table Rock Lake in the Ozark region of Missouri where wastewater discharges were entering the lake from failing septic systems, threatening the water supply because it received little or no treatment. This project illustrates how advanced wastewater treatment technologies combined with drip dispersal of the treated effluent into imported soil can be used as a solution to wastewater treatment problems in difficult site conditions. These advanced treatment technologies achieved very high removal rates for BOD5, phosphorus, and fecal coliform. The project also established a management system—Responsible Management Entity—for achieving sustainable system performance, as well as removing the responsibility of system maintenance from property owners and developers.

    About the Presenters

    Orin Shanks, Ph.D. - Dr. Shanks is a geneticist whose primary specialty is the application of molecular technologies for environmental microbiology. Over his years with EPA, he has investigated and published works on the identification of host-associated genetic markers of fecal pollution, development of quantitative real-time PCR methods, fate and transport of nucleic acids, as well as utility of molecular methods for ambient water quality management. Dr. Shanks received his undergraduate and Master’s degrees from the University of Wyoming and his Ph.D. from Oregon State University.

    Alfonso Blanco, Ph.D., P.E., DWRE - Dr. Blanco is an environmental engineer with 40 years of domestic and international experience on wastewater projects. Presently he is working for the EPA’s Office of Wastewater Management, Sustainable Communities Branch in Washington, DC. Mr. Blanco graduated with an Associate Degree in Mechanical Design Engineering from Wentworth Institute, a B.S. in Civil Engineering from Merrimack College, a Master’s Degree in Environmental Engineering from Tufts University, and a Ph.D. in Remote Sensing from George Mason University. Dr. Blanco has published in several peer review journals and is a Licensed Professional Engineer and a Diplomat in Water Resources Engineering.

  • Current Water Treatment and Distribution System Optimization for Cyanotoxins (May 26, 2015)
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    Treatment strategies to remove algal toxins from drinking water (Presented by Lili Wang, EPA’s Office of Water). Public water systems are encouraged to take an integrated approach to address potential algal toxin health concerns in drinking water, which includes source water control, monitoring, treatment, and communication. This presentation focuses on treatment strategies being adopted or considered by water treatment plants to remove algal toxins while meeting other treatment goals. The presentation also discussed on-going efforts at the Office of Water to help states and public water systems implement the algal toxin Health Advisories.

    Removal of cyanobacteria and cyanotoxins through drinking water treatment (Presented by Nicholas Dugan, EPA’s Office of Research and Development). This presentation covers the control of intact cyanobacterial cells through particulate removal processes such as coagulation, sedimentation and filtration. The control of cyanobacterial toxins through oxidation and adsorption processes including, but not limited to, chlorine, ozone, and granular activated carbon will also be discussed. Finally, a case study based on data collected from multiple treatment facilities during EPA’s Office of Research and Development Lake Erie treatment plant sampling program will be presented. The study includes the examination of chlorophyll and toxin data to track the propagation of cells and their associated toxins through several treatment plants.

    About the Presenters

    Lili Wang, P.E. - Lili is an environmental engineer with EPA's Office of Ground Water and Drinking Water, Standards and Risk Management Division, Standards and Risk Reduction Branch. She joined EPA in 2011 to work on regulatory determination, the Six-Year Review of Microbial/Disinfection Byproducts Rules, the fluoride rule, and microbial and cyanotoxin water treatment issues. Lili came to EPA with 15 years of prior experience with environmental consulting firms providing research and development support to EPA, the U.S. Navy, and international clients on water treatment and contaminated site remediation. Lili is a registered professional engineer in Ohio.

    Nicholas Dugan, P.E. - Nick is an environmental engineer with EPA's Office of Research and Development (ORD), National Risk Management Research Laboratory, Water Supply and Water Resources Division, Treatment Technology Evaluation Branch. In addition to ORD's Lake Erie treatment plant sampling program, he has performed or supervised bench- and pilot- scale treatment studies to evaluate the control of cyanobacteria, cyanobacteria toxins, cryptosporidium, pesticides, pharmaceuticals, nitrates, perchlorate, ammonia, and disinfection byproduct precursors through a variety of drinking water treatment processes. Nick is a member of the American Water Works Association and is registered as a professional engineer in Ohio.

  • Understanding End Water Quality in Hospitals and Other Large Buildings (April 28, 2015)
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    Use and effectiveness of various available technologies for the treatment and control of Legionella (Presented by César Cordero, EPA’s Office of Water). This presentation provides a brief overview of the EPA draft document, “Legionella: Current Knowledge on Treatment Technologies,” which will characterize the current body of knowledge regarding the use and effectiveness of various available technologies for the treatment and control of Legionella. The document will provide an overview on Legionella’s microbial, epidemiological and other characteristics, as well as describe various control approaches for the prevention and remediation of Legionella. The information on treatment technologies will include a characterization of their effectiveness, water quality issues, and recommended operational conditions based on the reviewed literature. The document could assist primacy agencies, affected facilities, and system operators in their decision-making process regarding measures to control for Legionella in building water systems.

    Water quality issues in large buildings and emerging treatment technologies for premise plumbing-related pathogens (Presented by Dr. Mark Rodgers, EPA’s Office of Research and Development). The Safe Drinking Water Act (SDWA) sets limits on water quality indicators for water in the distribution system. Once this distributed water enters a building or household, the responsibility of maintaining water quality shifts to the owners. The latest data for waterborne diseases indicates that premise plumbing-related outbreaks are increasing across the United States. This fact, and the legal ramifications of waterborne outbreaks, are leading hospital and hotel owners to address water quality in their buildings. This presentation discusses ORD’s investigation of water quality issues in large buildings, with the goal of providing information to building owners on how water quality changes as it moves through complex premise plumbing systems. The evaluation of emerging treatment technologies designed specifically to control premise plumbing-related microbial pathogens is also discussed.

    About the Presenters

    César Cordero - César joined the Standards and Risk Reduction Branch of EPA's Office of Ground Water and Drinking Water in 2007. During his time with EPA, he has been involved in the review of the Revised Total Coliform Rule and the Long Term 2 Enhanced Surface Water Treatment Rule. He has also been involved in the development of the Contaminant Candidate Lists as well as helping address issues related to emerging waterborne pathogens. César has a B.S. in Industrial Microbiology and an M.S. in Biology, both from the University of Puerto Rico-Mayaguez.

    Mark Rodgers, Ph.D. - Dr. Rodgers is a supervisory microbiologist for EPA's Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division where he serves as the Acting Chief for the Microbial Contaminants Control Branch. In this role, he supervises microbiologists working on a diverse research program that includes the development of assays for determining sources of fecal contamination in source waters, the community composition of biofilms in drinking water distribution systems, the fate of pathogenic and indicator organisms in biosolids, and the effectiveness of various conventional and emerging drinking water disinfectants.

  • Small Water System Alternatives: Media and Membrane Filtration for Small Communities and Households (March 31, 2015)
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    Small water system compliance technologies for the treatment of regulated contaminants (Presented by Michael Finn, EPA’s Office of Water). In this presentation, Michael reviews the common and “best available” small water system compliance technologies for the treatment of regulated contaminants including microbial, chemical and radiological contaminants. The presentation includes regulatory operational and monitoring issues as well as specific small system concerns associated with the treatment technologies. Michael also discusses the ‘top three’ regulated contaminant compliance concerns for small water systems.

    Filtration alternatives for small communities and households (Presented by Craig Patterson, EPA’s Office of Research and Development). This presentation highlights research case studies on innovative and commercially available drinking water treatment alternatives for small community water systems. Emphasis is placed on media and membrane filtration technologies capable of meeting the requirements of the Long-Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) and the Groundwater Rule. Information is also provided on household water treatment systems for removal of chemicals and pathogens from well water. The major source of information is from small drinking water research studies, including lessons learned over the past 12 years at the EPA Test and Evaluation Facility in Cincinnati, Ohio and at field locations in several EPA Regions and states.

    About the Presenters

    Michael J. Finn, P.E. - Michael is an environmental engineer with EPA's Office of Groundwater and Drinking Water, Drinking Water Protection Branch. He joined EPA in 2001 to work on the development of the Long Term 2 Enhanced Surface Water Treatment Rule, the Stage 2 Disinfection Byproducts Rule, and the Groundwater Rule and the related guidance documents. He is currently working with states and public water systems on the implementation of those rules, microbial water treatment issues, alternative treatment technologies and water availability, and water efficiency in public water systems. Prior to coming to EPA, he was with the California drinking water program as a field engineer in the San Francisco Bay area. He holds a Bachelor of Science in Environmental Resources Engineering from Humboldt State University in Arcata, CA. He is a licensed professional engineer in California and Maryland and a certified water treatment operator.

    Craig Patterson, P.E. - Craig is an environmental engineer with EPA's Office of Research and Development (ORD), National Risk Management Research Laboratory, Water Supply and Water Resources Division, Water Quality Management Branch. He has over 30 years of experience with federal environmental programs and environmental consulting firms. Over the past 12 years, Craig’s research emphasis has been on drinking water treatment technologies for small communities of less than 500 people. His research has focused mainly on emerging and innovative water treatment technologies in support of EPA regulatory requirements. This effort has included collaborative field studies on a wide variety of surface and groundwater sources with researchers in EPA Regions, states, local health departments, water utilities, private industry, and academia.

  • Innovative Biological Treatment for Small Water Systems: Ammonia, Nitrites, and Nitrates (February 24, 2015)
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    Biological treatment process for the removal of ammonia from small water systems (Presented by Dr., Darren Lytle, Ph.D., EPA’s Office of Research and Development). Ammonia in source waters can cause water treatment and distribution system problems, many of which are associated with biological nitrification. Therefore, in some cases, the removal of ammonia from water is desirable. Biological oxidation of ammonia to nitrate and nitrate (nitrification) is well understood and common in wastewater processes. However, the biological filtration to convert ammonia to nitrate in drinking water applications in full-scale systems is limited in the United States. In this presentation, Dr. Lytle (1) discusses reasons why ammonia in source waters can be problematic to water treatment and distributions; (2) discusses drinking water treatment options; (3) provides an in-depth discussion of the biological ammonia treatment option (engineering design and practical treatment considerations); and (4) provides data from pilot- and full-scale biological ammonia treatment studies.

    Alternative preventative method to reduce nitrates/nitrites and cost (Presented by Mike Muse, EPA’s Office of Water). The Nature Conservancy and University of Illinois have determined a method to help provide clean drinking water to 70,000 people in Bloomington, IL. Lake Bloomington, one of two reservoirs that provide the city with its drinking water, has historically exceeded the nitrate Maximum Contaminant Level (MCL) of 10 mg/L. Ten years of the Conservancy’s and its partners’ extensive research has shown that wetlands constructed in targeted agricultural fields effectively remove 46% -90% of inflowing nitrates from tile drains that would otherwise enter adjacent streams and rivers. In this presentation, this Illinois case study is discussed, showcasing an alternative preventative method to reduce nitrates/nitrites and cost.

    About the Presenters

    Darren Lytle, Ph.D. - Dr. Lytle is an environmental engineer for the EPA's Office of Research and Development, National Risk Management Research Laboratory, Water Supply and Water Resources Division where he serves as the Acting Branch Chief for the Treatment Technology Evaluation Branch. Since beginning work at EPA in 1991, Dr. Lytle’s primary goal has been to research the quality of drinking water. Over the years, he has investigated and published works on drinking water systems, including work on distribution system corrosion control and water quality (e.g., red water control, lead and copper corrosion control); filtration (emphasis on removal of particles, and microbial contaminants and pathogens from water); biological water treatment; and iron and arsenic removal.

    Mike Muse - Mike works within Source Water Protection and Climate Change in EPA’s Office of Ground Water and Drinking Water.

  • Research and Implementation of Arsenic Removal Technologies at Small Community Water Systems (January 27, 2015)
    Webinar Recording ExitArsenic treatment technology demo program
     

    Arsenic treatment implementation (Presented by Jamie Harris, EPA’s Office of Water). This presentation provides an overview of the wide variety of challenges faced by small water systems to implementing arsenic treatment for compliance with the Arsenic Rule of the Safe Drinking Water Act.

    Performance and cost effectiveness of arsenic removal technologies for small drinking water systems (Presented by Thomas Sorg, EPA’s Office of Research and Development). This presentation provides a general overview of the effectiveness of arsenic removal technologies and their cost, including capital and operating costs. Emphasis is placed on the three technologies that are most commonly utilized by small systems: adsorptive media, iron removal, and coagulation/filtration. The major source of information provided is from EPA’s Arsenic Demonstration Program. This program collected performance and cost data from 50 full scale arsenic removal systems installed in 26 different states.

    About the Presenters

    Jamie Harris - Jamie has been in the field of hydrology for more than 20 years. Her experience is related to water quality, water supply and regulatory issues both related to the Clean Water Act and the Safe Drinking Water Act. Jamie has worked as an environmental consultant overseas as well as in Maryland. She has also worked for the Southern Nevada Water Authority and Maryland Environmental Service at Maryland Department of the Environment. At EPA, Jamie oversees the implementation of a number of the National Primary Drinking Water Regulations including the Chemical Phase Rules which includes over 65 Inorganic and Organic Contaminants, one of which is arsenic.

    Thomas Sorg, P.E., BCEE - Tom is an environmental engineer with EPA's Office of Research and Development (ORD), National Risk Management Research Laboratory, Water Supply and Water Resources Division, Treatment Technology Evaluation Branch. He has over 51 years of experience with federal environmental programs. Tom's experience includes the past 42 years with the drinking water research and development program of EPA, and 25 years as Chief of the Inorganics and Particular Control Branch of the Drinking Water Research Division. His research emphasis has been on drinking water treatment technology for the removal of inorganic and radionuclide contaminants from water supplies, including the removal of arsenic. During the past 12 years, Tom's research has focused mainly on treatment technologies to remove arsenic from drinking water in support of the revised arsenic Maximum Contaminant Level (MCL) of 10 μg/L. This effort has included oversight of the EPA Arsenic Removal Full-Scale Demonstration Program.