Water Quality in Madison, MN (56256)
EPA violation data for public water systems serving ZIP code 56256.
No Health-Based Violations
None of the 16 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are5 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 53% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,446
Population
16
Water Systems
5
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (16)
Madison
Lac Qui Parle Valley School
All resolvedBorgund Lutheran Church
Garfield Lutheran Church
Midwest Machinery-Madison
Lac Qui Parle County Park
Minnesota Valley Lutheran Church
Arneson
Haukos Boarding Home
Dawson-Madison Airport
Lund Implement Company
Lac Qui Parle County Park
Nu Madison Motel
The Rainbow
Earthrise Farm
Florida Lutheran Church
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Used to disinfect water — generally safe at regulated levels.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
Copper (Cu)
Exceeds limitSampled: Jul 2025
How Does This Compare?
Madison (56256) has more violations than 53% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 5, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.