LEWISTOWN CITY OF: EPA violation history, explained

LEWISTOWN CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 5,923, over 2,906 connections.

How this compares nationally

161 total violations and 24 health-based ones put LEWISTOWN CITY OF at the 94th percentile nationally for violation burden, rank 722 of 12,903.

Against the MT average

MT's 59 covered systems average 6.7 health-based violations each; LEWISTOWN CITY OF carries 24, more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

LEWISTOWN CITY OF's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2016-01-03. Last reported to EPA: 06/29/2026.

The concern categories on record

LEWISTOWN 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: 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 LEWISTOWN CITY OF's record does not cover

This is what LEWISTOWN CITY OF reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 161 logged violations can see. The guide to what this data misses covers that gap.