ONTONAGON

ONTONAGON, MI · ~2,607 people served

Check your exact address → ONTONAGON overview

100

Excellent

PurityRadar safety score

PWSID

MI0005030

State

Michigan

City

ONTONAGON

Population served

2,607

Primary source

Surface water

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 Jun 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 0300 began Jun 2017 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2016 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2016 Resolved

Monitoring & reporting · Total coliform began Aug 1993 Resolved

Recent enforcement actions

State action · SIF Jun 2024
State action · SOX Jan 2024
State action · SIE Aug 2023
State action · SIA Aug 2023
State action · SOX Nov 2017
State action · SIA Sep 2017
State action · SOX May 2016
State action · SOX Oct 2002

This profile is built from EPA public records for system MI0005030 — 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.