What's in JEFFERSON COUNTY PWSD 3's water?

JEFFERSON COUNTY PWSD 3's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. 17,000 people get their water from it, across 8,245 connections.

JEFFERSON COUNTY PWSD 3's record against the rest of the country

3 total violations and 0 health-based ones put JEFFERSON COUNTY PWSD 3 at the 10th percentile nationally for violation burden, rank 11,604 of 12,903.

How JEFFERSON COUNTY PWSD 3 compares within MO

JEFFERSON COUNTY PWSD 3's 0 health-based violations sit within 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 JEFFERSON COUNTY PWSD 3 is from 2006-01-07. Last reported to EPA: 06/16/2026.

What this data is and is not

JEFFERSON COUNTY PWSD 3'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 3 logged violations can see. The guide to what this data misses covers that gap.