Home/ Directory/ MI/ BARTON HILLS

Water system · PWSID MI0000430

BARTON HILLS

ANN ARBOR, MI · ~450 people served

Check your exact address → ANN ARBOR overview
100
Excellent
PurityRadar safety score

PWSID

MI0000430

State

Michigan

City

ANN ARBOR

Population served

450

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

13

Violations on record

1

Unaddressed

7

Health-based

48

Enforcement actions

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

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2024 Resolved
Reporting · Lead & Copper Rule began May 2020 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2012 Resolved
Monitoring & reporting · Total coliform began Aug 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1993 Resolved
Monitoring & reporting · Total coliform began Nov 1992 Resolved

Recent enforcement actions

  • State action · SIE Dec 2025
  • State action · SIA Dec 2025
  • State action · SOX Dec 2024
  • State action · SIA Nov 2024
  • State action · SIF Oct 2020
  • State action · SIE Jun 2020
  • State action · SIA Jun 2020
  • State action · SOX Jun 2020

This profile is built from EPA public records for system MI0000430 — 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.