Science & Technology
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EPA Pacific Southwest PFAS Tribal Drinking Water Sampling Project
The PFAS Tribal Drinking Water Sampling Project is a voluntary sampling effort that is offered to all public water systems (PWS) on tribal lands in EPA’s Pacific Southwest Region (Region 9).
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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).
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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.
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Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.9
Document for Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.9, December 2020.
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Frequently Asked Questions: Laboratory Analysis for Microcystins in Drinking Water
Microcystin method-/laboratory-related FAQs.
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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.
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Decision Making, A Mock Town Meeting on a Proposed Tank Farm
A class lesson on discussing a proposed tank farm.
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Thirstin's Water Cycle Adventure
A graphical representation of the water cycle with labels.
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Matching Game: How Much Water?
A matching game using water usage fun facts for grades 4-8.
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Learn About EPA Quality Program
A brief description of the Environmental Protection Agency's Quality Program
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Cleaning Matters! Lessons Learned from Comparing Response Behaviors and Willingness to Pay in Probability- and Non-Probability Samples
This is a working paper titled "Cleaning Matters! Lessons Learned from Comparing Response Behaviors and Willingness to Pay in Probability- and Non-Probability Samples"
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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).
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Information about the On-Site EPA Inspections Map
information on data and use of the Enforcement Case Map
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Information about the Enforcement Case Map
information on data and use of the Enforcement Case Map
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Fuel Economy and Environment Label Examples
See fuel economy and environment label examples for gasoline, electric and plug-in hybrid electric vehicles.
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Substitutes in Foam Blowing Agents
This page describes end uses that use blowing agents as well as how they are used.
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Substitutes in Refrigeration and Air Conditioning
This page lists and describes the refrigeration and air conditioning end-uses.
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Unacceptable and Acceptable Substitutes Tables
Landing page for substitute tables.
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MOU between the USGS and EPA
MOU between USGS and EPA for he Water Quality Portal
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Frequently Asked Questions About Climate Change
Answers to some frequently asked questions about climate change.