Public Water Partners

ST PETERS, MO · St. Charles County

ST PETERS PWS Water System

Consumer Confidence Report status

ST PETERS PWS 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 ST PETERS PWS.

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)
MO6010719
System type
Community Water System
Population served
52,575
Service connections
19,083
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

ST PETERS PWS is among the 14 largest community water systems in Missouri, serving 52,575 people from surface water.

As of August 1, 2026, its federal record holds 1 entry in 2019, all of which EPA lists as closed. Nothing has been added since 2019.

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 Consumer Confidence Rule.

Violation history

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2019 – November 27, 2019

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is ST PETERS PWS required to publish a Consumer Confidence Report?

Yes. ST PETERS PWS 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 ST PETERS PWS’s next Consumer Confidence Report due?

ST PETERS PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does ST PETERS PWS have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for ST PETERS PWS.

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

MALACH, BILL

636-477-6600

ST PETERS, MO 63376-0000