A94/100
Marshall — Water Quality Report 2026
Serving 13,890 people · Minnesota
Water Source
Groundwater
County
—
System ID
MN1420006
Violations
0
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.83 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/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 Marshall
Is Marshall water safe to drink?
Marshall water receives a grade of A (94/100), which is considered excellent. Out of 67 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has Marshall detected?
67 contaminants were tested in Marshall's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does Marshall have any EPA violations?
No, Marshall has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does Marshall serve?
Marshall serves approximately 13,890 people, Minnesota.
What type of water does Marshall provide?
Marshall sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MN1420006.
How does Marshall compare to other utilities in Minnesota?
Marshall scores 94/100 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.