Public Water Partners

WILLIAMSVILLE, MO · Wayne County

WILLIAMSVILLE PWS Water System

Consumer Confidence Report status

WILLIAMSVILLE 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 WILLIAMSVILLE 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)
MO4010861
System type
Community Water System
Population served
342
Service connections
182
Ownership
local government
Water source
groundwater (wells)

WILLIAMSVILLE PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 342 people from groundwater.

As of August 1, 2026, its federal record holds 6 entries between 1980 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 6, 3 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Consumer Confidence Rule, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.

Violation history

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2023 – November 1, 2023

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2021 – December 6, 2021

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    July 1, 2020 – November 10, 2020

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    May 1, 2014 – May 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    June 24, 1980 – September 23, 1983

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    June 24, 1980 – September 23, 1982

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is WILLIAMSVILLE PWS required to publish a Consumer Confidence Report?

Yes. WILLIAMSVILLE 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 WILLIAMSVILLE PWS’s next Consumer Confidence Report due?

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

Does WILLIAMSVILLE PWS have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for WILLIAMSVILLE 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

JOY, SANDY

573-998-2745

WILLIAMSVILLE, MO 63967-0000