Is WARRENTON PWS required to publish a Consumer Confidence Report?

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

WARRENTON 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.

WARRENTON, MO · Warren County

WARRENTON PWS Water System

Consumer Confidence Report status

WARRENTON 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 WARRENTON 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): MO6010834
System type: Community Water System
Population served: 8,208
Service connections: 3,908
Ownership: local government
Water source: groundwater (wells)

WARRENTON PWS is one of 140 community water systems in Missouri in the 3,301 to 10,000 people size category, serving 8,208 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1994 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.

Of the 10, 2 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 and the Consumer Confidence Rule.

Violation history

Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2014 – November 30, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2009 – February 28, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 2007 – June 30, 2007
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – June 28, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2005 – April 30, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2003 – April 30, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1995 – July 31, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1994 – May 31, 1994
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
November 1, 2014 – November 30, 2014	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
February 1, 2009 – February 28, 2009	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2008 – October 31, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2007 – June 30, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2005 – June 28, 2006	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2005 – April 30, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2003 – April 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1995 – July 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 1994 – May 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

July 13, 2015State Public Notification received6 linked violations
March 5, 2015State Compliance achieved6 linked violations
January 22, 2014State Compliance achieved5 linked violations
February 19, 2009State Public Notification requested56 linked violations
February 19, 2009State Violation/Reminder Notice2 linked violations
January 15, 2009State Public Notification received3 linked violations
December 17, 2008State Public Notification requested3 linked violations
July 25, 2007State Public Notification requested5 linked violations
April 21, 2003State Public Notification requested11 linked violations

Common questions

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

GEVERS, GUY

636-456-3535

WARRENTON, MO 63383-0000