Science & Technology

PCB Congeners by Low-Resolution GC-MS - Method 1628 (Not yet approved)

Clean Water Act Method 1628 measures polychlorinated biphenyls (PCBs) in wastewater (draft, July 2021)

CWA Analytical Methods: Contaminants of Emerging Concern

Test methods for pharmaceuticals and personal care products in wastewater and other contaminants of emerging concern

Regulation of Biotechnology under TSCA and FIFRA

This site explains how EPA regulates biotechnology under the Toxic Substances Control act and the Federal Insecticide, Fungicide, and Rodenticide Act and how biotechnology can be used.

Urban Waters - The Mystic River Watershed

Information on the efforts of the US EPA, the Commonwealth of Massachusetts, the municipalities within the Mystic River Watershed and nongovernmental organizations to improve the water quality of the Mystic River.

Regulatory Determination 1 for Contaminants on the First Drinking Water Contaminant Candidate List

Learn about EPA's Regulatory Determination 1 for drinking water contaminants

CMAQ Resources/Utilities for Model Users

Utilize the CMAS Center's help desk and training courses. Browse software programs for preparing CMAQ inputs as well as evaluating and visualizing CMAQ outputs.

Ozone Designation and Classification Information

Nutrient Pollution

Nutrient pollution is one of America's most widespread, costly and challenging environmental problems, and is caused by excess nitrogen and phosphorus in the air and water.

Curated Topical Reuse Resources

Curated list of topics resources related stormwater.

Reusing Water for Potable Applications Resources

A page describing reusing water for potable applications

Water Reuse/Advanced Water Treatment Training Resources

Output from WRAP Action 9.2 – Support and Promote Opportunities for Creating a Skilled Workforce for Water Reuse Applications

Water Reuse/Advanced Water Treatment Training Resources

Guidance on Qualifying an Analytical Method for Determining the Cellulosic Converted Fraction of Corn Kernel Fiber

Guidance to explain interpretation of regulatory requirements for determining the cellulosic converted fraction of corn kernel fiber.

Biodiesel Emissions Analysis Program

Using existing data, the EPA's biodiesel emissions analysis program sought to quantify the air pollution emission effects of biodiesel for diesel engines that have not been specifically modified to operate on biodiesel.

Ultra-Low Sulfur Gasoline Emissions Study

Understanding the effects of gasoline sulfur level on the in-use fleet is important for assessing emissions inventories and impacts of future policy decisions. Test fuels were two non-ethanol gasolines with properties typical of certification fuel.

June 2018 MOVES Model Review Work Group Meeting Materials

June 2018 MOVES Model Review Work Group Meeting Materials.

Reports on Cars used for Testing Fuel Economy

This website provides links to EPA's detailed vehicle test data associated with fuel economy program.

Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2014

This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2014.

Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2011

This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2011.

Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2013

This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2013.

Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2012

This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2012.