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Water system · PWSID MI0000705

BIG CREEK/MENTOR UTILITY AUTHORITY

MIO, MI · ~622 people served

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

PWSID

MI0000705

State

Michigan

City

MIO

Population served

622

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

4

Violations on record

0

Unaddressed

2

Health-based

9

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2019. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2017 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1999 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1999 Resolved

Recent enforcement actions

  • State action · SOX Jul 2019
  • State action · SIF Jun 2019
  • State action · SIA Nov 2018
  • State action · SIE Nov 2018
  • State action · SOX Jul 1999
  • State action · SIF Jul 1999
  • State action · SFH Jul 1999
  • State action · SIA Jul 1999

This profile is built from EPA public records for system MI0000705 — 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.