A91/100
Winnebago — Water Quality Report 2026
Serving 1,391 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1220011
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.009 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1993.
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 Winnebago
Is Winnebago water safe to drink?
Winnebago water receives a grade of A (91/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Winnebago detected?
1 contaminants were tested in Winnebago's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Winnebago have any EPA violations?
Yes, Winnebago has 2 EPA violation(s) on record, with the most recent in 1993. Violation types include MCL, MR. 1 are health-based violations.
How many people does Winnebago serve?
Winnebago serves approximately 1,391 people, Minnesota.
What type of water does Winnebago provide?
Winnebago sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1220011.
How does Winnebago compare to other utilities in Minnesota?
Winnebago scores 91/100 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.