A100/100
Prior Lake — Water Quality Report 2026
Serving 25,282 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1700007
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 297.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 Prior Lake
Is Prior Lake water safe to drink?
Prior Lake water receives a grade of A (100/100), 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 Prior Lake detected?
66 contaminants were tested in Prior Lake's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Prior Lake have any EPA violations?
No, Prior Lake has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does Prior Lake serve?
Prior Lake serves approximately 25,282 people, Minnesota.
What type of water does Prior Lake provide?
Prior Lake sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1700007.
How does Prior Lake compare to other utilities in Minnesota?
Prior Lake scores 100/100 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.