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Water system · PWSID MI0005010

ONAWAY, CITY OF

ONAWAY, MI · ~880 people served

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

PWSID

MI0005010

State

Michigan

City

ONAWAY

Population served

880

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

16

Violations on record

0

Unaddressed

0

Health-based

39

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2025. Official EPA record →

Reporting · Lead & Copper Rule began Dec 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2018 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2018 Resolved
Reporting · Lead & Copper Rule began Oct 2017 Resolved
Monitoring & reporting · Combined radium-226/228 began Jan 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2011 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2011 Resolved
Other · EPA contaminant 7000 began Jul 2008 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2008 Resolved

Recent enforcement actions

  • State action · SIF Jun 2025
  • State action · SIA Jan 2025
  • State action · SIE Jan 2025
  • State action · SOX Jan 2025
  • State action · SOX Jun 2022
  • State action · SIE Dec 2021
  • State action · SIA Dec 2021
  • State action · SOX Aug 2020

This profile is built from EPA public records for system MI0005010 — 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.