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Water Topics

When the water in our rivers, lakes, and oceans becomes polluted; it can endanger wildlife, make our drinking water unsafe, and threaten the waters where we swim and fish. EPA research supports efforts under the Clean Water Act and Safe Drinking Water Act.

Drinking Water

  • Local Water Quality Reports
  • Drinking Water Basics
    • Lead in Drinking Water
  • Private Wells
  • Source Water Protection

Water Bodies

  • Watersheds
    • How's My Waterway?
    • Invasive Species
  • Lakes and Rivers
  • National Estuary Program (NEP)
  • Oceans, Coasts, Wetlands

Wastewater and Water Treatment

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Infrastructure Finance

  • Water Finance Center
    • Funding Sources
  • Water Infrastructure Finance and Innovation Act (WIFIA)
  • Sustainable Water Infrastructure

Pollution Prevention and Monitoring

  • Hydraulic Fracturing (Fracking)
  • Polluted Runoff (NPS)
  • NPDES: Controlling Pollutant Discharge into Waters
    • Resources for Permit Writers
    • Stormwater Pollution
  • Nutrient Pollution

Water Research

  • Water Data and Tools
  • Water Research
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    • Methods and Models for Water Research
  • National Aquatic Resource Surveys

Water Resilience

  • Overview of Drinking Water & Wastewater Resilience
    • Creating Resilient Water Utilities (CRWU)
  • Climate Change in the Water Sector
  • Climate Ready Estuaries

What You Can Do

  • What You Can Do To Protect Source Water
  • Save Water With WaterSense
  • Learn About Protecting Watersheds
  • Volunteer Water Quality Monitoring
  • Urban Water Renewal

Laws & Regulations

  • Clean Water Act
  • Safe Drinking Water Act
  • Drinking Water Regulations: Maximum Contaminant Levels (MCLs)
  • Regulatory Information by Topic: Water

EPA Water Division

  • About the Office of Water
  • Water FAQs
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 19, 2022
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