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Water system · PWSID DC0000001

WASHINGTON AQUEDUCT DIVISION.

WASHINGTON, DC

Check your exact address → WASHINGTON overview
100
Excellent
PurityRadar safety score

PWSID

DC0000001

State

District of Columbia

City

WASHINGTON

Population served

—

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

5

Violations on record

0

Unaddressed

2

Health-based

12

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2020. Official EPA record →

Monitoring & reporting · EPA contaminant 0300 began Jun 2020 Resolved
Monitoring & reporting · EPA contaminant 0300 began Oct 2010 Resolved
Treatment technique · EPA contaminant 0300 health-based began Dec 2008 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jul 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1993 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Aug 2020
  • EPA/federal action · EIA Aug 2020
  • EPA/federal action · EOX Nov 2010
  • EPA/federal action · EIF Nov 2010
  • EPA/federal action · EIE Oct 2010
  • EPA/federal action · EIA Oct 2010
  • EPA/federal action · EOX Jan 2009
  • EPA/federal action · EIF Dec 2008

This profile is built from EPA public records for system DC0000001 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.