DrinkingWaterCheck

What's in UNION PWS's water?

UNION PWS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 12,348, over 5,170 connections.

How this compares nationally

26 total violations and 19 health-based ones put UNION PWS at the 93th percentile nationally for violation burden, rank 967 of 12,903.

How UNION PWS compares within MO

UNION PWS's 19 health-based violations sit above the MO average of 6.1, across 327 systems statewide. 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 UNION PWS is from 2025-02-07 (health-based: 2015-01-07). Last reported to EPA: 06/16/2026.

What kind of problem, specifically

UNION 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:

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

This is what UNION PWS 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 26 logged violations can see. The guide to what this data misses covers that gap.