Lake Elmo: EPA violation history, explained
Lake Elmo has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 10,978 people get their water from it, across 3,540 connections.
Lake Elmo's record against the rest of the country
Out of 12,903 systems in this dataset, Lake Elmo ranks 3,083th by violation burden (76th percentile) - 22 violations total, 6 health-baseds.
How Lake Elmo compares within MN
MN's 254 covered systems average 0.8 health-based violations each; Lake Elmo carries 6, 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 Lake Elmo is from 2024-01-10 (health-based: 2015-01-11). Last reported to EPA: 05/28/2026.
What kind of problem, specifically
Lake Elmo'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Lake Elmo's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and Lake Elmo's customers' taps is household plumbing, invisible to a system-level record ranked 3,083th of 12,903 by violation count. The guide to what this data misses covers that gap.