A98/100
Mahnomen — Water Quality Report 2026
Serving 1,210 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1440002
Violations
2
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1992.
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 Mahnomen
Is Mahnomen water safe to drink?
Mahnomen water receives a grade of A (98/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has Mahnomen detected?
1 contaminants were tested in Mahnomen's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does Mahnomen have any EPA violations?
Yes, Mahnomen has 2 EPA violation(s) on record, with the most recent in 1992. Violation types include MR.
How many people does Mahnomen serve?
Mahnomen serves approximately 1,210 people, Minnesota.
What type of water does Mahnomen provide?
Mahnomen sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1440002.
How does Mahnomen compare to other utilities in Minnesota?
Mahnomen scores 98/100 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.