Duluth: EPA violation history, explained
Duluth has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 86,859 people get their water from it, across 28,850 connections.
How this compares nationally
Out of 12,903 systems in this dataset, Duluth ranks 8,926th by violation burden (31th percentile) - 3 violations total, 1 health-based.
Against the MN average
Duluth's 1 health-based violations sit above the MN average of 0.8, across 254 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Duluth's most recent violation on record is dated 2017-01-10, with the most recent health-based one dated 2017-01-10. Last reported to EPA: 05/28/2026.
The concern categories on record
Duluth'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: Interim Enhanced Surface Water Treatment Rule
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 Duluth's record does not cover
Everything on this page is Duluth's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 3 logged violations can see. The guide to what this data misses covers that gap.