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Water system · PWSID MI0005120

OWOSSO, CITY OF

OWOSSO, MI · ~16,353 people served

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

PWSID

MI0005120

State

Michigan

City

OWOSSO

Population served

16,353

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2023). Levels in parts per trillion (ppt).

Lithium

17,400 ppt

limit —

No federal limit

Violations & enforcement

5

Violations on record

0

Unaddressed

1

Health-based

20

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved
Treatment technique · Lead & Copper Rule health-based began Nov 2022 Resolved
Monitoring & reporting · EPA contaminant 3014 began Oct 2022 Resolved
Other · EPA contaminant 7000 began Oct 1999 Resolved

Recent enforcement actions

  • State action · SOX Aug 2024
  • State action · SIF Jul 2024
  • State action · SIA Oct 2023
  • State action · SIE Oct 2023
  • State action · SIF Jan 2023
  • State action · SIF Jan 2023
  • State action · SIA Nov 2022
  • State action · SIE Nov 2022

This profile is built from EPA public records for system MI0005120 — 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.