A87/100
MONROE SOUTH COUNTY — Water Quality Report 2026
Serving 33,816 people · Michigan
Water Source
Purchased Surface Water
County
—
System ID
MI0004455
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 MONROE SOUTH COUNTY
Is MONROE SOUTH COUNTY water safe to drink?
MONROE SOUTH COUNTY water receives a grade of A (87/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MONROE SOUTH COUNTY detected?
69 contaminants were tested in MONROE SOUTH COUNTY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MONROE SOUTH COUNTY have any EPA violations?
Yes, MONROE SOUTH COUNTY has 2 EPA violation(s) on record, with the most recent in 2015. Violation types include MCL. 2 are health-based violations.
How many people does MONROE SOUTH COUNTY serve?
MONROE SOUTH COUNTY serves approximately 33,816 people, Michigan. The system provides water to 1 community: Monroe.
What type of water does MONROE SOUTH COUNTY provide?
MONROE SOUTH COUNTY 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 MI0004455.
How does MONROE SOUTH COUNTY compare to other utilities in Michigan?
MONROE SOUTH COUNTY scores 87/100 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.