Public Water Partners

BARNHART, MO · Jefferson County

JEFFERSON CO CONS PWSD C 1 Water System

Consumer Confidence Report status

JEFFERSON CO CONS PWSD C 1 must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for JEFFERSON CO CONS PWSD C 1.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.

System facts

System ID (PWSID)
MO6024295
System type
Community Water System
Population served
37,000
Service connections
14,920
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

JEFFERSON CO CONS PWSD C 1 is among the 19 largest community water systems in Missouri, serving 37,000 people from surface water.

As of August 1, 2026, its federal record holds 1 entry in 2010, all of which EPA lists as closed. Nothing has been added since 2010.

None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules.

Violation history

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    February 1, 2010 – February 28, 2010

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is JEFFERSON CO CONS PWSD C 1 required to publish a Consumer Confidence Report?

Yes. JEFFERSON CO CONS PWSD C 1 is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is JEFFERSON CO CONS PWSD C 1’s next Consumer Confidence Report due?

JEFFERSON CO CONS PWSD C 1’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does JEFFERSON CO CONS PWSD C 1 have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for JEFFERSON CO CONS PWSD C 1.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

EDWARDS, LYNNE

636-948-2500

BARNHART, MO 63012-0000