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Go to vaccinate.dc.gov or call 1-855-363-0333 to pre-register and then help us spread the word. #DCHOPE
Read Mayor Bowser’s Presentation on DC’s COVID-19 Situational Update: April 12

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Water Quality Regulations

Most Requested Rules and Regulations

Water Quality Standards - 2016 Triennial Review

Action to Amend the Ban on Swimming in the Potomac and Anacostia Rivers

Water Quality Regulatory and Legislative Affairs

Stormwater Regulations:

Disclaimer: These regulations on our website were proofed to the best of our ability. When legal matters are involved it is best to check the DC Register, DC Municipal Regulations, and DC Code for the printed versions. Please contact the Office of Documents to order printed versions, or call (202) 727-5090.

Resources for Businesses

Total Maximum Daily Load (TMDL) Documents

On September 21, 2010, the U.S. Environmental Protection Agency approved a new joint Total Maximum Daily Load (TMDL) to limit trash in the Anacostia River in both the District of Columbia, and the state of Maryland, making the Anacostia the first interstate river in the nation with such a Clean Water Act trash limit.

- Map of Known Wetlands within the District of Columbia [PDF] (Identified by Number)
- Interim Policy on Wetlands
- District of Columbia Wetland Conservation Plan

Water Related Laws and Regulations

General Data and Reports

Fish and Wildlife Regulations

Contact TTY: