A95/100
Owatonna — Water Quality Report 2026
Serving 26,430 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1740007
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
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 Owatonna
Is Owatonna water safe to drink?
Owatonna water receives a grade of A (95/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Owatonna detected?
66 contaminants were tested in Owatonna's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Owatonna have any EPA violations?
Yes, Owatonna has 2 EPA violation(s) on record, with the most recent in 1992. Violation types include MR.
How many people does Owatonna serve?
Owatonna serves approximately 26,430 people, Minnesota.
What type of water does Owatonna provide?
Owatonna sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1740007.
How does Owatonna compare to other utilities in Minnesota?
Owatonna scores 95/100 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.