Data and Tools

Thirstin's Water Cycle Adventure

A graphical representation of the water cycle with labels.

Matching Game: How Much Water?

A matching game using water usage fun facts for grades 4-8.

Contact Us About the Quality Program

The contact us form for the EPA Quality Program regarding quality management activities for all environmental data collection and environmental technology programs performed by or for the Agency and the EPA Information Quality Guidelines.

Manufacturer-Run In-Use Testing Program Data for Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles Class 2b and 3

This page provides data from the manufacturer-run in-use emissions verification testing program (IUVP) and in-use confirmatory testing program (IUCP).

Information about the On-Site EPA Inspections Map

information on data and use of the Enforcement Case Map

Information about the Enforcement Case Map

information on data and use of the Enforcement Case Map

Unacceptable and Acceptable Substitutes Tables

Landing page for substitute tables.

MOU between the USGS and EPA

MOU between USGS and EPA for he Water Quality Portal

RadNet Query Builder Search User Guide

RadNet is a national network monitoring stations that regularly samples the nation's air, precipitation, drinking water, or pasteurized milk for a variety of radionuclides and radiation types.

Basics of Climate Change

The earth's climate is changing. Multiple lines of evidence show changes in our weather, oceans, ecosystems, and more. The buildup of greenhouse gases in our atmosphere and the warming of the planet are responsible for changes.

PFAS Analytical Methods Development and Sampling Research

Provides links and resources for PFAS analytical methods and sampling.

America's Children and the Environment Data Tables

EPA PMF Problems & Suggestions

EPA PMF problems and suggestions form.

Geospatial Data Sources for MARPLOT

Sources of geospatial data for MARPLOT

Computational Toxicology and Exposure APIs: Clients

Client API packages have been developed to support access to the Computational Toxicology and Exposure APIs (CTX APIs)

Designation and NAAQS Information Related to PM-2.5 (2012 Standard)

Designation and NAAQS Information Related to PM-2.5 (2006 Standard)

Designation and NAAQS Information Related to PM-2.5 (1997 Standard)

Designation and NAAQS Information Related to PM-10 (1987 Standard)

Designation and NAAQS Information Related to 8-Hour Ozone (2008)