Learn the Issues
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Drinking Water Technologies
DRINKING WATER TECHNOLOGY CLEARINGHOUSE
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Drinking Water in your Home
Many people choose to filter or test the drinking water that comes out of their tap or from their private well for a variety of reasons. And whether at home, at work or while traveling, many Americans drink bottled water.
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3Ts for Reducing Lead in Drinking Water
Revised 3Ts page
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Clean Air Act Permitting in Missouri
Information on permitting in Kansas and EPA's oversight.
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Clean Air Act Permitting in Kansas
Information on permitting in Kansas and EPA's oversight.
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Local Drinking Water Information
States and territories collect data about the performance of your drinking water supplier and share that information with EPA, which posts it to our website and maintains a telephone hotline to answer questions about drinking water.
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Basic Information about Your Drinking Water
The United States enjoys one of the world's most reliable and safest supplies of drinking water. Congress passed the Safe Drinking Water Act (SDWA) in 1974 to protect public health, including by regulating public water systems.
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Assumptions and References for Household Carbon Footprint Calculator
Assumptions and References for Household Carbon Footprint Calculator
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U.S. Greenhouse Gas Inventory Report: 1990-2014
The national greenhouse gas inventory is developed each year to track trends in U.S. emissions and removals. Find emissions by source, economic sector and greenhouse gas.
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Data Resources for State, Local, and Tribal Governments
Access data resources for state, local, and tribal governments to improve energy planning.
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Trump EPA Takes Action After Uncovering Government Subcontractor Analysts Altering Measurements in East Palestine Train Derailment Clean Up
EPA-Validated Testing Shows No New Groundwater Contamination or Threat to Public Health
EPA sent a notice to Tetra Tech Inc. detailing the failure of its subcontractor—ALS Houston—to meet data quality standards in groundwater sampling conducted at the East Palestine train derailment site in the fall of 2025.
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Natural Radionuclides in Public Drinking Water
Public drinking water systems in the United States must ensure that the water they provide to their customers meet all federal, state, and local drinking water standards. Natural radionuclides are a potential hazard.
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Local Energy Efficiency Benefits and Opportunities
Find out more about the benefits of energy efficiency and how local governments can take advantage of opportunities for improving energy efficiency throughout their operations.
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Background on Drinking Water Standards in the Safe Drinking Water Act (SDWA)
The Safe Drinking Water Act authorizes EPA to set national standards for drinking water to protect against health effects from exposure to naturally-occurring and man-made contaminants.
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SDWA Economic Analysis
This page provides information on EPA’s approach to economic analysis when developing standards for drinking water contaminants.
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How EPA Regulates Drinking Water Contaminants
This page describes the EPA's methods and processes of regulating contaminants in drinking water.
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EPA in Arkansas
Portal for news and information about EPA's efforts in Arkansas and AR environmental conditions.
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Ports Primer: A2. Citizen Mapping, Data Tools and Resources
The Ports Primer appendix includes a list of tools which may make the Ports Primer more useful.
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New York City Locomotive Repowers: Collaborative Efforts to Improve Air Quality
The New York City (NYC) Economic Development Corporation and NYC Department of Small Business Services, in collaboration with the U.S. EPA undertook a project to reduce locomotive emissions in and around NYC with CSX Transportation and Waste Management.
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Ports Primer: 8.2 Citizen Science Projects
Communities can demonstrate environmental concerns by providing scientific evidence of environmental impact. Communities may be able to access existing local data and conduct their own analyses or communities may turn to existing studies.