Science & Technology
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Water Quality Standards Regulations: Colorado
Water quality standards that are EPA-approved or in effect for Clean Water Act purposes.
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Freshwater Harmful Algal Blooms Request for Applications (RFA)
EPA is seeking regular and early career applications proposing innovative research on the prediction, prevention, control and mitigation of freshwater HABs as well as the drivers, life cycle patterns, and fate of and effects from from less-common, less
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Report of the Workshop on Selecting Input Distributions for Probabilistic Assessments
The workshop and this report will assist EPA in developing a framework and guidance for selecting input distributions for probabilistic risk assessments.
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Notification: Evaluation of the EPA’s Progress in Fulfilling Infrastructure and Investment and Jobs Act Requirements Related to Water and Wastewater System Cybersecurity
Notification: Evaluation of the EPA’s Progress in Fulfilling Infrastructure and Investment and Jobs Act Requirements Related to Water and Wastewater System Cybersecurity
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Water Quality Data
The Water Quality Portal Data Warehouse is a repository for water quality, biological, and physical data and is used by state environmental agencies, EPA and other federal agencies, universities, private citizens, and many others.
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Applying the National Aquatic Resource Survey Data
The NARS generate nationally-consistent water quality data across a variety of indicators. States have applied the NARS data to help address local policy questions and to implement changes regarding aquatic resource management.
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StreamCat Data Processing and Quality Assurance
Description of steps used to process data and keep up with quality assurance standards when creating the StreamCat dataset.
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Magnificent Ground Water Connection
A compilation of some of the best ground water-related activities from previously existing curricula, seasoned with a collection of original materials and geared specifically to New England.
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UST Finder
This page contains a fact sheet about the UST Finder web mapping application
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Visual Plumes
Page on Visual Plumes model system, a Windows-based software application for simulating surface water jets and plumes.
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Research Highlights Archive
EPA scientists have primary responsibility for the continual development of CMAQ and its related models. There are currently a multitude of research projects underway that focus on a range of topics.
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Chemical Process Overview
CMAQ simulates the chemistry of airborne pollutants with a semi-integrated approach.
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Improving the representation of monoterpene chemistry in CMAQ
CMAQ was used to simulate conditions during the the Southern Oxidant and Aerosol Study (SOAS) in the summer of 2013. Data collected as part of this study have been used to perform diagnostic model evaluation.
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Trends in Air Pollution Exposure Using CMAQ
CMAQ simulations have been analyzed to investigate the historical trend in the long-term exposure to PM2.5 and PM2.5-related premature mortality (PM2.5-mortality); and to examine implications for future trends in human exposure to air pollution.
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Tire Crumb and Synthetic Turf Field Literature and Report List as of Nov. 2015
This list provides the public with studies and reports addressing tire crumb research.
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Downloadable Tools
Learn about and access tools and resources developed in association with each Organon Partner Project
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About the Organon
About the Organon
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Notification: EPA's Reporting of Its Financial and Award Data in Accordance with the Digital Accountability and Transparency Act of 2014
Project #OA-FY21-0080, January 7, 2021. The OIG plans to begin our required audit of the EPA's reporting of its financial and award data in accordance with the Digital Accountability and Transparency Act of 2014, known as the DATA Act.
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Notification: EPA's Fiscal Year 2020 FIFRA and PRIA Financial Statements
Project #OA-FY21-0081 and OA-FY21-0082: The OIG plans to begin our required audits of the EPA's fiscal year 2020 financial statements for the Pesticide Reregistration and Expedited Processing Fund and the Pesticide Registration Improvement Act Fund.
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Notification: EPA's Fiscal Year 2019 Toxic Substances Control Act Service Fee Fund Financial Statements
Project #OA-FY21-0406, January 28, 2021. The OIG plans to begin our required audit of the EPA's fiscal year 2019 financial statements for the Toxic Substances Control Act Service Fee Fund.