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Water system · PWSID WA5315550

COUPEVILLE TOWN OF

Coupeville, WA · ~4,077 people served

Check your exact address → Coupeville overview
67
Fair
PurityRadar safety score

PWSID

WA5315550

State

Washington

City

Coupeville

Population served

4,077

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Aug 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

9.8 ppt

limit 4 ppt

Above EPA limit · 2.4×

PFHxS

Perfluorohexanesulfonic acid

3.8 ppt

limit 10 ppt

Below EPA limit

PFHxA

17 ppt

limit —

No federal limit

PFPeA

12 ppt

limit —

No federal limit

PFBS

6.7 ppt

limit —

No federal limit

PFBA

5.3 ppt

limit —

No federal limit

PFHpA

3.3 ppt

limit —

No federal limit

Violations & enforcement

37

Violations on record

0

Unaddressed

0

Health-based

33

Enforcement actions

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

Monitoring · Lead & Copper Rule began Oct 2020 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2005 Resolved
Monitoring & reporting · Fluoride began Jan 2002 Resolved
Monitoring & reporting · Selenium began Jan 2002 Resolved
Monitoring & reporting · Cadmium began Jan 2002 Resolved
Monitoring & reporting · Beryllium began Jan 2002 Resolved
Monitoring & reporting · Cyanide began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 1075 began Jan 2002 Resolved
Monitoring & reporting · EPA contaminant 1085 began Jan 2002 Resolved
Monitoring & reporting · Antimony began Jan 2002 Resolved

Recent enforcement actions

  • State action · SOX Nov 2020
  • State action · SOX Sep 2015
  • State action · SOX Dec 2007
  • State action · SOX Dec 2007
  • State action · SOX Dec 2007
  • State action · SOX Dec 2007
  • State action · SOX Apr 2007
  • State action · SOX Apr 2007

This profile is built from EPA public records for system WA5315550 — 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.