A99/100
Saint Charles — Water Quality Report 2026
Serving 3,825 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1850009
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1991.
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 Saint Charles
Is Saint Charles water safe to drink?
Saint Charles water receives a grade of A (99/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has Saint Charles detected?
31 contaminants were tested in Saint Charles's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does Saint Charles have any EPA violations?
Yes, Saint Charles has 1 EPA violation(s) on record, with the most recent in 1991. Violation types include MR.
How many people does Saint Charles serve?
Saint Charles serves approximately 3,825 people, Minnesota.
What type of water does Saint Charles provide?
Saint Charles sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1850009.
How does Saint Charles compare to other utilities in Minnesota?
Saint Charles scores 99/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Minnesota state page for a full comparison of water systems.