A93/100
ST. LOUIS, CITY OF — Water Quality Report 2026
Serving 6,976 people · Michigan
Water Source
Purchased Surface Water
County
—
System ID
MI0006320
Violations
3
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 ST. LOUIS, CITY OF
Is ST. LOUIS, CITY OF water safe to drink?
ST. LOUIS, CITY OF water receives a grade of A (93/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has ST. LOUIS, CITY OF detected?
31 contaminants were tested in ST. LOUIS, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ST. LOUIS, CITY OF have any EPA violations?
Yes, ST. LOUIS, CITY OF has 3 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, MCL. 1 are health-based violations.
How many people does ST. LOUIS, CITY OF serve?
ST. LOUIS, CITY OF serves approximately 6,976 people, Michigan. The system provides water to 1 community: St. Louis.
What type of water does ST. LOUIS, CITY OF provide?
ST. LOUIS, CITY OF 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 MI0006320.
How does ST. LOUIS, CITY OF compare to other utilities in Michigan?
ST. LOUIS, CITY OF scores 93/100 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.