Is CAINSVILLE PWS required to publish a Consumer Confidence Report?

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

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

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.

CAINSVILLE, MO · Harrison County

CAINSVILLE PWS Water System

Consumer Confidence Report status

CAINSVILLE 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 CAINSVILLE 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): MO1010122
System type: Community Water System
Population served: 290
Service connections: 148
Ownership: local government
Water source: groundwater (wells)

CAINSVILLE PWS is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 290 people from groundwater.

As of August 1, 2026, its federal record holds 5 entries between 1993 and 2024, all of which EPA lists as closed.

All 5 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 Total Coliform Rules, the Lead and Copper Rule, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
October 1, 2024 – April 2, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2014 – August 31, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2001 – November 30, 2001
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1993 – September 30, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2024 – April 2, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
August 1, 2014 – August 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2001 – November 30, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 1993 – September 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

April 2, 2025State Compliance achieved2 linked violations
October 9, 2024State Public Notification received4 linked violations
August 14, 2024State Public Notification requested6 linked violations
October 20, 2014State Public Notification received5 linked violations
May 16, 2014State Public Notification requested7 linked violations
March 26, 2008State Public Notification requested19 linked violations
March 6, 2007State Public Notification requested4 linked violations
November 7, 2001State Compliance achieved2 linked violations

Common questions

Is CAINSVILLE PWS required to publish a Consumer Confidence Report?: Yes. CAINSVILLE 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 CAINSVILLE PWS’s next Consumer Confidence Report due?: CAINSVILLE PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CAINSVILLE PWS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CAINSVILLE 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

DESKINS, REBECCA

660-893-5315

CAINSVILLE, MO 64632-0077