Data and Tools

ExpoKids: Background

ExpoKids allows for visualization of aggregate exposure estimates, produced by ExpoFIRST, across lifestages.

How's My Waterway Widget Instructions

Clean Water Indian Set-Aside Emerging Contaminant Program

Information to assist federally recognized Tribes within EPA's Pacific Southwest (California, Nevada, Arizona) improve wastewater infrastructure to address emerging contaminants (ECs).

Drinking Water Emerging Contaminant Programs

Assistance for federally recognized Tribes within EPA's Pacific Southwest Region (Region 9) to address emerging contaminants in drinking water.

Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.9

Document for Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.9, December 2020.

Frequently Asked Questions: Laboratory Analysis for Microcystins in Drinking Water

Microcystin method-/laboratory-related FAQs.

Drinking Water Performance and Results Report

The Government Performance and Results Act (GPRA) tool provides detail information about inventory and violation data.

Environmental Education: Where Does Your Water Come From?

This document contains instructions for a taste test will illustrate the differences between groundwater and surface water, highlight some of the common contaminants in natural water and encourage student thought on the sources of drinking water.

Environmental Education: Non-point Source Pollution

This activity is designed to demonstrate to students what an average storm drain collects during a rainfall event and how the water from storm drains can impact the water quality and aquatic environments of local streams, rivers, and bays.

Decision Making, A Mock Town Meeting on a Proposed Tank Farm

A class lesson on discussing a proposed tank farm.

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.

MOU between the USGS and EPA

MOU between USGS and EPA for he Water Quality Portal

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.

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)