Science & Technology

WATERS GeoViewer Tutorial

The content and purpose of each mapping service WATERS exposes.

Chemicals under the Toxic Substances Control Act (TSCA)

This web area will allow stakeholders to search and view centralized chemical info from various systems. This page will focus on TSCA chemical data such as health and safety studies, risk assessments and hazard characterizations.

Risk Evaluation for 1,1,2-Trichloroethane

EPA designated 1,1,2-trichloroethane as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.

WATERS GeoViewer

This landing page provides information about the EPA GeoPlatform hosted WATERS GeoViewer.

Air Modeling - Announcements

Air Modeling Recent Additions

Support Center for Regulatory Atmospheric Modeling (SCRAM)

This technical site provides access to air quality models (including computer code, input data, and model processors) and other mathematical simulation techniques used in assessing air emissions control strategies and source impacts.

EPA Announces $30 Million to Support Small Water Systems and Advance Implementation of Real Water Technical Assistance

EPA announced $30 million in grant funding, under EPA’s Real Water Technical Assistance Initiative, to provide training and technical assistance that will improve water quality in small and rural communities across America.

Release Date: July 24, 2026

Draft Guidance for Reducing Risk from Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) in Biosolids

Draft Guidance for Reducing Risk from PFOA and PFOS in Biosolids

Pending Petitions for Renewable Fuel Pathways

This page provides guidance on how a company may petition EPA for a new renewable fuel pathway.

Certified Vehicle Model Report

This spreadsheet contains the 2005 light duty certified vehicle models report.

Certified Vehicle Test Result for Other Manufacturers

This spreadsheet contains 2005 other manufacturer certification test results.