A96/100
CORUNNA, CITY OF — Water Quality Report 2026
Serving 2,028 people · Michigan
Water Source
Purchased Groundwater
County
—
System ID
MI0001640
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 270.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 CORUNNA, CITY OF
Is CORUNNA, CITY OF water safe to drink?
CORUNNA, CITY OF water receives a grade of A (96/100), which is considered excellent. Out of 27 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CORUNNA, CITY OF detected?
27 contaminants were tested in CORUNNA, CITY OF's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CORUNNA, CITY OF have any EPA violations?
Yes, CORUNNA, CITY OF has 1 EPA violation(s) on record, with the most recent in 2020. Violation types include MR.
How many people does CORUNNA, CITY OF serve?
CORUNNA, CITY OF serves approximately 2,028 people, Michigan. The system provides water to 1 community: Corunna.
What type of water does CORUNNA, CITY OF provide?
CORUNNA, CITY OF sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MI0001640.
How does CORUNNA, CITY OF compare to other utilities in Michigan?
CORUNNA, CITY OF scores 96/100 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.