Thief River Falls: EPA violation history, explained
Thief River Falls had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 8,701 people through 3,503 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, Thief River Falls ranks 1,033th by violation burden (92th percentile) - 22 violations total, 18 health-baseds.
Against the MN average
MN's 254 covered systems average 0.8 health-based violations each; Thief River Falls carries 18, more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
Thief River Falls's most recent violation on record is dated 2025-01-01, with the most recent health-based one dated 2025-01-01. Last reported to EPA: 05/28/2026.
The concern categories on record
Thief River Falls'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; 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 Thief River Falls's record does not cover
Thief River Falls'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. This record - 18 health-based violations on file for Thief River Falls - 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.