What's in RIVER ROCK COUNTY WATER AND SEWER DIST's water?
RIVER ROCK COUNTY WATER AND SEWER DIST has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 4,200 people get their water from it, across 1,204 connections.
How this compares nationally
Out of 12,903 systems in this dataset, RIVER ROCK COUNTY WATER AND SEWER DIST ranks 2,979th by violation burden (77th percentile) - 57 violations total, 6 health-baseds.
How RIVER ROCK COUNTY WATER AND SEWER DIST compares within MT
Among the 59 MT systems in this dataset, the average is 6.7 health-based violations - RIVER ROCK COUNTY WATER AND SEWER DIST's 6 is at or below that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for RIVER ROCK COUNTY WATER AND SEWER DIST is from 2024-01-10 (health-based: 2008-01-06). Last reported to EPA: 06/29/2026.
What kind of problem, specifically
RIVER ROCK COUNTY WATER AND SEWER DIST'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
Everything on this page is RIVER ROCK COUNTY WATER AND SEWER DIST's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 6 health-based violations on file for RIVER ROCK COUNTY WATER AND SEWER DIST - 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.