Science & Technology
-
Bioassessment and Biocriteria Program Status for New Hampshire: Streams and Wadeable Rivers
Biocriteria Program Status of Alabama
-
Chromium in Drinking Water
Learn about chromium regulation in public drinking water systems and the potential that the regulation may be amended in the future to better address chromium-6.
-
America's Children and the Environment Webinar Archive
This webinar explained the foundations of America's Children and the Environment (ACE) indicators, ACE’s utilization of new resources and tools, and how ACE is dedicated to better empowering parents and caregivers.
-
Perchlorate in Drinking Water
Perchlorate is a naturally occurring and manufactured chemical anion. On February 11, 2011, EPA determined that perchlorate meets the Safe Drinking Water Act criteria for regulation as a contaminant.
-
Common Effects Approach for Aquatic Life Protective Values for Pesticides
The EPA is exploring how to build on the substantial high quality science developed under both OPP programs to develop additional tools and approaches to support a consistent and common set of effects characterization methods.
-
WMOST 2.0 Documentation
The Watershed Management Optimization Support Tool (WMOST) is a decision support tool that evaluates the relative cost-effectiveness of management practices at the local or watershed scale.
-
Virtual Beach v 2.4 User Guide
Guide for Virtual Beach modeling software, designed for developing site-specific Multiple Linear Regression (MLR) models for prediction of pathogen indicator levels at recreational beaches.
-
Biosolids Library
List of Biosolids Resources
-
Clearinghouse for Inventories and Emissions Factors (CHIEF)
Emissions inventories, modeling, and monitoring are the basis for understanding, controlling and tracking stationary sources of air pollution. This technical site provides access to tools and data to support those efforts.
-
New Jersey Impaired Waters List
The documents detail the New Jersey impaired waters list.
-
U.S. Virgin Islands Impaired Waters List
The documents detail the U.S. Virgin Islands' impaired waters list.
-
Puerto Rico Impaired Waters List
The documents detail the Puerto Rico impaired waters list.
-
Quality Assurance Project Planning in EPA's Pacific Southwest (Region 9)
EPA has developed guidelines to help state and Tribal governments develop Quality Assurance Project Plans (QAPPs) for documenting the type and quality of data needed for environmental decisions and the methods for collecting and assessing those data.
-
Request for Information
EPA is issuing a RFI to gather public input on a broader range of fuel options for the school bus sector. Public comments will directly inform the structure and priorities of a new spring 2026 grant program.
-
Safer Choice Webinar Archive
Presentation that highlights the science behind the Safer Choice program, how EPA works with product and chemical manufacturers, as well as Safer Choice label messaging.
-
Prioritizing Contaminants for Monitoring and Management Webinar Archive
EPA researcher presents work to develop methods and tools that integrate chemical monitoring with pathway-based bioactivity measurements, which will help provide screening-level assessments useful to identify and prioritize emerging contaminants.
-
Health Impact Assessments Webinar Archive
EPA researchers present the latest science on health impact assessments.
-
Environmental Quality Index Webinar Archive
Environmental Quality index, data reduction approaches to help improve statistical efficiency, summarizing information on the wider environment humans are exposed to. air, water, land, built, socio-demographic, human and environmental health
-
Wildfire Smoke Emissions Webinar Archive
This webinar presented by Wayne Cascio will highlight updates to the Wildfire Smoke Guide, as well as the Smoke Sense app, which is a mobile application that gets air quality information to people impacted by wildfire smoke, and helps those affected learn
-
Integrated Risk Information System (IRIS) Webinar Archive
EPA's Integrated Risk Information System (IRIS) program provides information on the potential adverse health effects that may result from exposure to chemical substances found in the environment.