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Water system · PWSID WA5309356

MAPLE HILL PARK

Coupeville, WA · ~35 people served

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

PWSID

WA5309356

State

Washington

City

Coupeville

Population served

35

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

10

Violations on record

0

Unaddressed

6

Health-based

17

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2024. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2023 Resolved
Monitoring & reporting · Nitrate began Jan 2022 Resolved
Monitoring & reporting · Nitrate began Jan 2021 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2012 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2008 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2005 Resolved

Recent enforcement actions

  • State action · SOX Oct 2024
  • State action · SFL Jun 2024
  • State action · SOX Jan 2021
  • State action · SOX Apr 2014
  • State action · SOX Jan 2014
  • State action · SFK Jun 2013
  • State action · SOX Jul 2010
  • State action · SOX Jan 2009

This profile is built from EPA public records for system WA5309356 — 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.