What's in MONTANA STATE PRISON's water?
MONTANA STATE PRISON has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,100 people get their water from it, across 53 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, MONTANA STATE PRISON ranks 5,754th by violation burden (55th percentile) - 117 violations total, 2 health-baseds.
Against the MT average
MT's 59 covered systems average 6.7 health-based violations each; MONTANA STATE PRISON carries 2, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
MONTANA STATE PRISON's most recent violation on record is dated 2026-06-12, with the most recent health-based one dated 2015-01-06. Last reported to EPA: 06/29/2026.
The concern categories on record
MONTANA STATE PRISON'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 MONTANA STATE PRISON's record does not cover
MONTANA STATE PRISON'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 - 2 health-based violations on file for MONTANA STATE PRISON - 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.