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Water system · PWSID WA5351400

MAPLEWOOD ADDITION WATER COOP

Renton, WA · ~435 people served

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

PWSID

WA5351400

State

Washington

City

Renton

Population served

435

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

47

Violations on record

0

Unaddressed

0

Health-based

22

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2021. Official EPA record →

Other · EPA contaminant 7000 began Jul 2021 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · Total coliform began Apr 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2015 Resolved
Monitoring & reporting · Nitrate began Jan 2015 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Total coliform began Jun 2012 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved

Recent enforcement actions

  • State action · SOX Sep 2021
  • State action · SOX Sep 2021
  • State action · SOX Dec 2018
  • State action · SOX Apr 2018
  • State action · SOX Dec 2016
  • State action · SOX Sep 2016
  • State action · SOX Dec 2015
  • State action · SOX May 2015

This profile is built from EPA public records for system WA5351400 — 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.