AVA PWS: EPA violation history, explained
AVA PWS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,000 people get their water from it, across 1,440 connections.
How this compares nationally
14 total violations and 8 health-based ones put AVA PWS at the 81th percentile nationally for violation burden, rank 2,477 of 12,903.
Against the MO average
MO's 327 covered systems average 6.1 health-based violations each; AVA PWS carries 8, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
AVA PWS's most recent violation on record is dated 2025-02-07, with the most recent health-based one dated 2016-06-11. Last reported to EPA: 06/16/2026.
The concern categories on record
AVA PWS'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); Groundwater 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 AVA PWS's record does not cover
Everything on this page is AVA PWS's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 14 logged violations can see. The guide to what this data misses covers that gap.