A83/100
GROSSE ILE TOWNSHIP — Water Quality Report 2026
Serving 10,371 people · Michigan
Water Source
Purchased Surface Water
County
—
System ID
MI0002870
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.019 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – September 30, 2023Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – September 30, 2023Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About GROSSE ILE TOWNSHIP
Is GROSSE ILE TOWNSHIP water safe to drink?
GROSSE ILE TOWNSHIP water receives a grade of A (83/100), which is considered excellent. Out of 69 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GROSSE ILE TOWNSHIP detected?
69 contaminants were tested in GROSSE ILE TOWNSHIP's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does GROSSE ILE TOWNSHIP have any EPA violations?
Yes, GROSSE ILE TOWNSHIP has 5 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, TT. 1 are health-based violations.
How many people does GROSSE ILE TOWNSHIP serve?
GROSSE ILE TOWNSHIP serves approximately 10,371 people, Michigan.
What type of water does GROSSE ILE TOWNSHIP provide?
GROSSE ILE TOWNSHIP sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MI0002870.
How does GROSSE ILE TOWNSHIP compare to other utilities in Michigan?
GROSSE ILE TOWNSHIP scores 83/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Michigan state page for a full comparison of water systems.