Maple Plain: EPA violation history, explained

Maple Plain has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,174 people get their water from it, across 666 connections.

Ranked against every other system in this dataset

Maple Plain has 3 violations on record in total, 1 of them health-based - ranking it 9,053th of 12,903 systems by violation count, the 30th percentile nationally.

Against the MN average

Among the 254 MN systems in this dataset, the average is 0.8 health-based violations - Maple Plain's 1 is above that. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

Maple Plain's most recent violation on record is dated 2013-12-02, with the most recent health-based one dated 2013-12-02. Last reported to EPA: 05/28/2026.

The concern categories on record

Maple Plain's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:

• Radionuclides - flagged from: Combined Radium (-226 and -228)

The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.

What Maple Plain's record does not cover

This is what Maple Plain reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 1 health-based violation on file for Maple Plain - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.