💧 ZIP Water Report

Tap water in Washington, DC — ZIP 20505

1 public water system serving about 632,323 people. PFAS "forever chemicals" have been detected here.

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Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5 testing. Levels and the 2024 federal limits are shown per system below.

Water systems serving 20505

D.c. Water And Sewer Authority
PWSID DC0000002 · serves 632,323 · surface water
0 health-based / 4 total violations (5 yrs) · PFAS up to 4.7 ppt
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Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology