BAY CITY, CITY OF

BAY CITY, MI · ~32,255 people served

Check your exact address → BAY CITY overview

100

Excellent

PurityRadar safety score

PWSID

MI0000470

State

Michigan

City

BAY CITY

Population served

32,255

Primary source

SWP

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 Dec 2024. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Jan 2024 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2009 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2009 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2009 Resolved

Monitoring & reporting · Total coliform began Dec 1995 Resolved

Recent enforcement actions

State action · SOX Dec 2024
State action · SIF Jun 2024
State action · SIE May 2024
State action · SIA May 2024
State action · SIA Jan 2021
State action · SOX Jul 2020
State action · SOX Feb 2010
State action · SOX Feb 2010

This profile is built from EPA public records for system MI0000470 — 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.