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Good Water Quality

Washington, DC 20585

District Of Columbia County · Population served: 632,323

Water Systems Serving This Area

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D.C. WATER AND SEWER AUTHORITY
Surface water · Pop. 632,323
PWSID: DC0000002

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.4
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

2 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFPeA4.7 pptNo standard—Unregulated
PFHxA3.1 pptNo standard400 pptUnregulated

Violation History (Last 5 Years)

8Total (5yr)
0Health-Based
8Major