COTTAGE GROVE, CITY OF: EPA violation history, explained
COTTAGE GROVE, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 10,879 people get their water from it, across 4,131 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, COTTAGE GROVE, CITY OF ranks 740th by violation burden (94th percentile) - 46 violations total, 24 health-baseds.
How COTTAGE GROVE, CITY OF compares within OR
COTTAGE GROVE, CITY OF's 24 health-based violations sit above the OR average of 6.0, across 160 systems statewide. 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 COTTAGE GROVE, CITY OF is from 2023-01-07 (health-based: 2009-01-11). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
COTTAGE GROVE, CITY OF'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 this data is and is not
Everything on this page is COTTAGE GROVE, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 24 health-based violations on file for COTTAGE GROVE, CITY OF - 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.