What's in JEFFERSON COUNTY PWSD 5's water?

JEFFERSON COUNTY PWSD 5's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 8,000, over 2,679 connections.

How this compares nationally

Out of 12,903 systems in this dataset, JEFFERSON COUNTY PWSD 5 ranks 11,384th by violation burden (12th percentile) - 4 violations total, 0 health-baseds.

How JEFFERSON COUNTY PWSD 5 compares within MO

JEFFERSON COUNTY PWSD 5's 0 health-based violations sit within the MO average of 6.1, across 327 systems statewide. See the lead and copper guide for why lead counts differently.

Most recent violation on record

The last violation EPA has on record for JEFFERSON COUNTY PWSD 5 is from 2025-02-07. Last reported to EPA: 06/16/2026.

What this data is and is not

This is what JEFFERSON COUNTY PWSD 5 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. Between the utility's meter and JEFFERSON COUNTY PWSD 5's customers' taps is household plumbing, invisible to a system-level record ranked 11,384th of 12,903 by violation count. The guide to what this data misses covers that gap.