CARO, CITY OF

CARO, MI · ~5,029 people served

Check your exact address → CARO overview

100

Excellent

PurityRadar safety score

PWSID

MI0001130

State

Michigan

City

CARO

Population served

5,029

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2025). Levels in parts per trillion (ppt).

Lithium

19,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · Arsenic began Nov 2024 Resolved

Monitoring & reporting · Arsenic began Oct 2024 Resolved

Reporting · Lead & Copper Rule began Jul 2021 Resolved

Reporting · Lead & Copper Rule began Nov 2018 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved

Monitoring & reporting · Arsenic began Apr 2006 Resolved

Max contaminant level (MCL) · Arsenic health-based began Jan 2006 Resolved

Monitoring & reporting · Arsenic began Apr 2005 Resolved

Other · EPA contaminant 7000 began Jul 2001 Resolved

Recent enforcement actions

State action · SIA Jan 2025
State action · SIA Jan 2025
State action · SOX Jan 2025
State action · SOX Jan 2025
State action · SIF Jul 2022
State action · SIA Jul 2021
State action · SIE Jul 2021
State action · SOX Jul 2021

This profile is built from EPA public records for system MI0001130 — 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.