A93/100
Monticello — Water Quality Report 2026
Serving 15,087 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1860012
Violations
1
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
manganese | 872.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1999.
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 Monticello
Is Monticello water safe to drink?
Monticello water receives a grade of A (93/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Monticello detected?
66 contaminants were tested in Monticello's water. Notable contaminants include Lead (90th percentile), manganese. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does Monticello have any EPA violations?
Yes, Monticello has 1 EPA violation(s) on record, with the most recent in 1999. Violation types include MR.
How many people does Monticello serve?
Monticello serves approximately 15,087 people, Minnesota.
What type of water does Monticello provide?
Monticello sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1860012.
How does Monticello compare to other utilities in Minnesota?
Monticello scores 93/100 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.