Tap Water Quality in Washington, D.C., DC
Find out what's in your drinking water. Enter your ZIP code below for a detailed water quality report for Washington, D.C., District of Columbia.
Try 20001 for Washington, D.C.
Washington, D.C. Drinking Water Overview
Population: ~690,000 | Source: Potomac River
DC Water draws from the Potomac River and treats water at the historic Dalecarlia and McMillan treatment plants. The District made national headlines in the early 2000s when a change in disinfection chemistry caused widespread lead leaching from service lines. While significant improvements have been made, lead service line replacement continues. PFAS from upstream sources and local military installations is also a concern.
Common water quality concerns in Washington, D.C.
Lead service lines
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PFAS
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Disinfection byproducts
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Legacy lead contamination
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What's in your Washington, D.C. water report
Contaminant levels
Every detected contaminant in your Washington, D.C. water system, compared to EPA limits and health guidelines.
Violation history
All EPA violations on record for water systems serving Washington, D.C., including health-based and monitoring violations.
Water quality grade
An A through F grade based on violation history, contaminant levels, and health guideline comparisons.
Filter recommendations
Which type of water filter will actually remove the contaminants found in your specific water system.
Water quality in nearby cities
Check your Washington, D.C. water now
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