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Water system · PWSID WA5312270

CHEALCO WATER SUPPLY

Arlington, WA · ~78 people served

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

PWSID

WA5312270

State

Washington

City

Arlington

Population served

78

Primary source

Groundwater

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

102

Violations on record

1

Unaddressed

0

Health-based

35

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2019. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Unaddressed
Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring · Lead & Copper Rule began Aug 2018 Resolved
Monitoring & reporting · Total coliform began Jan 2016 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2016 Resolved
Monitoring & reporting · Total coliform began Sep 2015 Resolved
Monitoring & reporting · Total coliform began Nov 2014 Resolved
Monitoring & reporting · Arsenic began Jan 2014 Resolved
Monitoring & reporting · Barium began Jan 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2014 Resolved
Monitoring & reporting · Cyanide began Jan 2014 Resolved
Monitoring & reporting · Chromium (total) began Jan 2014 Resolved

Recent enforcement actions

  • State action · SOX Dec 2019
  • State action · SOX Dec 2019
  • State action · SOX Sep 2019
  • State action · SOX Sep 2018
  • State action · SOX Feb 2016
  • State action · SOX Dec 2015
  • State action · SOX Dec 2015
  • State action · SOX Oct 2015

This profile is built from EPA public records for system WA5312270 — 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.