Learn the Issues
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Coastal Plains Ecoregion - National Lakes Assessment Results
NLA 2012 Results for the Coastal Plains ecoregion
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Ecoregional Results - National Lakes Assessment 2022
Results for the National Lakes Assessment 2012, including key findings, national results, ecoregional results, and state highlights.
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Reports and Data - National Lakes Assessment 2022
Products from the national lakes assessment 2017 including report, technical report, factsheet, data files, and data dashboard
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What is the National Lakes Assessment?
The National Lakes Assessment is a collaborative, statistical survey of the nation's lakes. It is one of four national surveys that EPA and its partners conduct to assess the condition and health of the nation's water resources.
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Water Efficiency and Conservation Resources for Small Drinking Water Systems
These documents and tools explain water efficiency at public water systems and describe water audits and water loss controls to control and mitigate drinking water losses in distribution systems.
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Now Available: Latest Update to the TSCA Inventory
EPA has released the latest Toxic Substances Control Act (TSCA) Inventory, with the public portion available on EPA’s website.
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산화에틸렌에 대해 더 알아보기
Korean translation of learn more about EtO web page
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Nơi để Tìm Hiểu Thêm Về Ethylene Oxide
Vietnamese translation of Where to Learn More About EtO web page
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如何獲得更多有關環氧乙烷的資訊
Traditional Chinese translation of Where to learn more about EtO web page.
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Federalism Consultation - Pre-Proposal of a Revised Definition of Waters of the US
Description of Federalism outreach efforts and links to document pages for all federalism letters received in response to Summer-Fall 2021 Waters of the United States Rulemaking
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Tribal Consultation - Pre-Proposal of a Revised Definition of Waters of the US
Description of Tribal outreach efforts and links to document pages for all tribal consultation letters received in response to Summer-Fall 2021 Waters of the United States Rulemaking
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Urban Warming and Health
This page includes presentation and transcript PDFs from EPA's August 19, 2015 webcast, "Improving Heat Health Resilience through Urban Infrastructure Planning and Design."
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Water Quality: Discharge Permit for MWRA Outfall - Protection of Massachusetts and Cape Cod Bays, May 2023
The 2000 discharge permit for the MWRA outfall took an aggressive approach to the protection of Massachusetts & Cape Cod Bays. The Draft Permit continues to protect them through limits that meet state water quality standards.
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Discharge Permit for MWRA Outfall Questions and Answers, May 2023
Questions and answers for the discharge permit for MWRA Outfall.
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Region 5 (Great Lakes) Indoor Air Quality
Find information about local resources relating to Indoor Air Quality and EPA Region 5.
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Research References Related to Indoor Air Quality in Schools
A healthy school environment is one of the keys to keeping young minds and bodies strong. In fact, a healthy school environment is one of eight core components in the Centers for Disease Control and Prevention (CDC) model Healthy Youth!
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Region 10 (Pacific Northwest) Indoor Air Quality
Find information about local resources relating to Indoor Air Quality and EPA Region 10.
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Soak Up the Rain New England Webinar Series
Learn more about upcoming webinars for Soak Up the Rain in New England which highlight innovative approaches to addressing stormwater in New England.
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Contaminant List
EPA has identified the chemical substances as contaminants of concern (COCs) for the the Colorado Smelter Superfund site.
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Letter to Tribal Consortia on Lead Testing in School and Child Care
Letter to tribal consortia announcing WIIN grant funding availability to tribal communities to implement voluntary lead testing of drinking water in schools and child care facilities