Notice of Solicitation of Public Comment - Regulations for Discharge of Groundwater to the Municipal Separate Stormwater Sewer System (MS4)
Notice is hereby given that the proposed 21 DCMR 1600: Discharge of Groundwater to the Municipal Separate Stormwater Sewer System (MS4) will be open for public comment upon its publication in the DC Register on May 26, 2023. The public comment period will run for sixty (60) days. Read More>>
Most Requested Rules and Regulations
- Floodplain Hazard Rules
- Comprehensive Stormwater Management Enhancement Amendment Act of 2008 (includes Coal Tar Ban)
- Anacostia River Clean Up and Protection Act (Bag Law)
- Retail Establishment Carryout Bags Regulations
- Stormwater Management Law & Regulations (DC Regs)
- Watershed Protection Laws & Regulations (DC Regs)
- Water Quality & Pollution Control (DC.Regs)
- Water Quality Laws & Regulations (DC Regs)
Water Quality Standards - 2016 Triennial Review
- Notice of Public Comment Extension – Water Quality Standards – 2016 Triennial Review
- Notice of Second Proposed Rulemaking – Water Quality Standards – 2016 Triennial Review
- Notice of Proposed Rulemaking - Water Quality Standards - 2016 Triennial Review
- EPA Comments 1st Proposed WQ
- Earthjustice Comments 1st Proposed WQ
- DC Water Comments 1st Proposed WQS
- Mendelson Comments 1st Proposed WQS
- EPA Comments 2nd Proposed WQS
- Brundage Comments 2nd Proposed WQS
- DC Water Comments 2nd Proposed WQS
- DC Water Comments Attachment 1 2nd Proposed WQS
- Socioeconomic, institutional, technological, and environmental (SITE) Study WQS 2016
Action to Amend the Ban on Swimming in the Potomac and Anacostia Rivers
- Notice of Final Rulemaking WQ Criteria for Special Swimming Events
- How to Obtain Approval of a Swim Event in the Potomac and Anacostia Rivers
- Notice of Final Rulemaking Title 21, Chapter 11, Section 1108
- Written Comments submitted to DOEE
- Public Hearing Transcript
- Response to Comments
- Notice of Final Rulemaking - Anacostia River Special Swimming Events
Water Quality Regulatory and Legislative Affairs
- Well Construction, Maintenance, and Abandonment Standards
- Notice of Final Rulemaking for DC Water Quality Standards
Effective February 4, 2014 - Policy on the Protection of the District's Groundwater
- District of Columbia Integrated Reports to the Environmental Protection Agency regarding the Clean Water Act
Stormwater Regulations:
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- Notice of Final Rulemaking to Establish a Stormwater Fee Discount Program
- Title 21, Chapter 5 – Water Quality and Pollution
- Title 21, Chapter 10 – Retail Establishment Carry Out Bags - Floodplain Management Regulations
- Water Pollution Control Act of 1984 (DC Law 5-188) [PDF]
- Water Quality Standards for Surface Waters (21 DCMR Ch. 11, Effective February 1, 2010) Regulations establishing water quality standards.
- Ground Water Quality Standards (21 DCMR §§ 1150-1158) [PDF]
- Water Quality Research Grant Regulations (21 DCMR Ch. 13) [PDF]
- Submerged Aquatic Vegetation (SAV) Regulations (21 DCMR Ch. 14) [PDF]
- Water Quality Monitoring Regulations (21 DCMR Ch. 19) [PDF]
- 2013 Stormwater Management and Soil Erosion and Sediment Control
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
- District Stormwater Fee
- Separate Storm Sewer System MS4 Permit
- Flood Zone Building Permits
- Well Permit Application
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.
- Anacostia Watershed
- Rock Creek Watershed
- Potomac River & Other Tributaries
- Recently Approved TMDLs
- Chesapeake Bay TMDL
- 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
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Water Quality Regulations:
-Title 21, Chapter 5 – Water Quality and Pollution
-Title 21 Chapter 6 – Riparian Rights and Water Privileges
-Title 21, Chapter 11 – Water Quality Standards
-Title 21, Chapter 14 - Submerged Aquatic Vegetation Regulations
-Title 21, Chapter 19 – Water Quality Monitoring Regulations
-Title 21, Chapter 22 – Water Pollution Enforcement -
Watershed Protection Regulations:
-Title 21, Chapter 5 – Water Quality and Pollution
-Title 21, Chapter 22 – Water Pollution Enforcement
-Title 20, Chapter 31 – Flood Hazard Rules
General Data and Reports
- Real-time Water Quality Monitoring on the Potomac and Anacostia Rivers
- Summary of Ground-Water-Quality Data in the Anacostia River Watershed, Washington, DC, September– December 2005
- Lithologic Coring in the Lower Anacostia Tidal Watershed, Washington, DC, July 2002
- USGS Ground Water- Quality Data for the District of Columbia
- USGS Ground-Water Data for the District of Columbia
- USGS Real-Time Water Data for the District of Columbia
