Mountain Lake: EPA violation history, explained

Mountain Lake's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 2,018 people through 827 service connections.

How this compares nationally

3 total violations and 0 health-based ones put Mountain Lake at the 8th percentile nationally for violation burden, rank 11,845 of 12,903.

How Mountain Lake compares within MN

MN's 254 covered systems average 0.8 health-based violations each; Mountain Lake carries 0, not more than typical for the state. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

The last violation EPA has on record for Mountain Lake is from 2020-01-10. Last reported to EPA: 05/28/2026.

What this data is and is not

Everything on this page is Mountain Lake's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and Mountain Lake's customers' taps is household plumbing, invisible to a system-level record ranked 11,845th of 12,903 by violation count. The guide to what this data misses covers that gap.