GRAND COULEE WATER DEPT CITY OF

Grand Coulee, WA · ~1,428 people served

Check your exact address → Grand Coulee overview

100

Excellent

PurityRadar safety score

PWSID

WA5328700

State

Washington

City

Grand Coulee

Population served

1,428

Primary source

GWP

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2010. Official EPA record →

Other · EPA contaminant 7000 began Jul 2010 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jan 1992 Resolved

Recent enforcement actions

State action · SOX Oct 2010
EPA/federal action · EOX Mar 2006
State action · SFL Jun 1998
State action · SFK Feb 1997
State action · SFK Dec 1996
State action · SFK Nov 1993
State action · SIF Sep 1985
State action · SIA Sep 1985

This profile is built from EPA public records for system WA5328700 — 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.