Archived Water Quality Standards

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For current Water Quality Standard regulations, please visit District of Columbia Municipal Regulations.

To view District’s Water Quality Standards regulatory history:

• 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
  • Earthjustice Comments
  • Brundage Comments
  • DC Water Comments
     
• Archived Water Quality Standards
  • 2013 Final WQS
  • 2010 Final WQS
  • 2005 Final WQS
  • 2002 Final WQS
  • 1994 Final WQS
  • 1990 Final WQS
  • 1987 Final WQS
  • 1985 Final WQS
  • 1981 Final WQS
  • 1978 Final WQS

View socioeconomic, institutional, technological, and environmental (SITE) Studies.

For more information, email [email protected].