Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals and Toxics
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Pesticides
    • Radon
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • EPA Administrator
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory
Impaired Waters and TMDLs
Contact Us

Impaired Waters and TMDLs Program in your EPA Region, State or Tribal Land

Find your region to explore Clean Water Act Section 303(d) program resources.

Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, VermontRegion 2: New Jersey, New York, Puerto Rico, US Virgin IslandsRegion 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West VirginiaRegion 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, WisconsinRegion 6: Arkansas, Louisiana, New Mexico, Oklahoma, TexasRegion 7: Iowa, Kansas, Missouri, NebraskaRegion 8: Colorado, Montana, North Dakota, South Dakaota, Utah, WyomingRegion 9: Arizona, California, Hawaii, Nevada, Pacific IslandsRegion 10: Alaska, Idaho, Oregon, Washington
  • Impaired Waters and TMDLs Home
  • Program Vision
  • Impaired Waters and TMDLs throughout the U.S
  • Technical Tools and Resources
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 31, 2022
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.