A86/100
GRAND BLANC, CITY OF — Water Quality Report 2026
Serving 8,276 people · Michigan
Water Source
Groundwater
County
—
System ID
MI0002740
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.18 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2022 – August 31, 2022Rule: Total Coliform RuleEnforcement: 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 GRAND BLANC, CITY OF
Is GRAND BLANC, CITY OF water safe to drink?
GRAND BLANC, CITY OF water receives a grade of A (86/100), which is considered excellent. Out of 32 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GRAND BLANC, CITY OF detected?
32 contaminants were tested in GRAND BLANC, CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does GRAND BLANC, CITY OF have any EPA violations?
Yes, GRAND BLANC, CITY OF has 3 EPA violation(s) on record, with the most recent in 2022. Violation types include MON, MR.
How many people does GRAND BLANC, CITY OF serve?
GRAND BLANC, CITY OF serves approximately 8,276 people, Michigan. The system provides water to 1 community: Grand Blanc.
What type of water does GRAND BLANC, CITY OF provide?
GRAND BLANC, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MI0002740.
How does GRAND BLANC, CITY OF compare to other utilities in Michigan?
GRAND BLANC, CITY OF scores 86/100 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.