Is CLARKTON PWS required to publish a Consumer Confidence Report?

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

CLARKTON 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.

CLARKTON, MO · Dunklin County

CLARKTON PWS Water System

Consumer Confidence Report status

CLARKTON 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 CLARKTON 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): MO4010170
System type: Community Water System
Population served: 1,124
Service connections: 436
Ownership: local government
Water source: groundwater (wells)

CLARKTON PWS is one of 489 community water systems in Missouri in the 501 to 3,300 people size category, serving 1,124 people from groundwater.

As of August 1, 2026, its federal record holds 31 entries between 1994 and 2026, all of which EPA lists as closed.

Of the 31, 20 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 Groundwater Rule, and inorganic chemicals.

Violation history

Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
March 1, 2026 – March 31, 2026
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2025 – June 30, 2025
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
December 1, 2024 – December 31, 2024
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2024 – December 31, 2024
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
October 1, 2022 – October 31, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2022 – June 30, 2022
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 26, 2022 – April 27, 2023
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2022 – December 31, 2022
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
May 1, 2021 – May 31, 2021
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
April 1, 2021 – April 30, 2021
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2020 – November 9, 2020
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
January 1, 2020 – January 31, 2020
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
December 1, 2019 – December 31, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2019 – December 31, 2019
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
October 1, 2018 – October 31, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
July 1, 2017 – July 31, 2017
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2015 – November 30, 2015
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
July 1, 2015 – July 31, 2015
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
April 1, 2015 – April 30, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2015 – April 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2013 – June 30, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2012 – November 30, 2012
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
May 1, 2012 – May 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2007 – July 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2002 – October 31, 2002
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
December 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1995 – August 31, 1995
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1994 – July 31, 1994
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
March 1, 2026 – March 31, 2026	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Archived
June 1, 2025 – June 30, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
December 1, 2024 – December 31, 2024	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Archived
May 1, 2024 – May 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
October 1, 2022 – October 31, 2022	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
June 1, 2022 – June 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 26, 2022 – April 27, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
May 1, 2021 – May 31, 2021	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
April 1, 2021 – April 30, 2021	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
July 1, 2020 – November 9, 2020	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2020 – January 31, 2020	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
December 1, 2019 – December 31, 2019	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
December 1, 2019 – December 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2018 – October 31, 2018	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2017 – July 31, 2017	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
November 1, 2015 – November 30, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2015 – July 31, 2015	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
April 1, 2015 – April 30, 2015	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
April 1, 2015 – April 30, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2013 – June 30, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2012 – November 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2012 – May 31, 2012	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
May 1, 2012 – May 31, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2007 – July 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2002 – October 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
December 1, 2001 – December 31, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 1995 – August 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1994 – July 31, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

August 13, 2025State Public Notification received4 linked violations
July 23, 2025State Public Notification requested6 linked violations
July 23, 2025State Violation/Reminder Notice4 linked violations
July 14, 2025State Compliance achieved4 linked violations
February 25, 2025State Public Notification requested4 linked violations
February 6, 2025State Public Notification received4 linked violations
August 13, 2024State Public Notification received5 linked violations
July 2, 2024State Public Notification requested5 linked violations
June 25, 2024State Compliance achieved3 linked violations
April 28, 2023State Public Notification received5 linked violations
August 1, 2022State Public Notification requested5 linked violations
April 29, 2020State Compliance achieved3 linked violations
March 3, 2020State Public Notification received3 linked violations
March 2, 2020State Public Notification received3 linked violations
February 27, 2020State Formal Notice of Violation issued3 linked violations
January 31, 2020State Public Notification requested3 linked violations
January 31, 2020State Violation/Reminder Notice3 linked violations
January 15, 2020State Compliance achieved3 linked violations
December 27, 2018State Compliance achieved3 linked violations
September 28, 2017State Compliance achieved3 linked violations
August 30, 2017State Public Notification requested3 linked violations
January 6, 2016State Public Notification requested3 linked violations
October 2, 2015State Public Notification received3 linked violations
August 31, 2015State Violation/Reminder Notice3 linked violations
August 12, 2015State Compliance achieved5 linked violations
July 6, 2015State Compliance achieved4 linked violations
January 22, 2014State Compliance achieved33 linked violations
July 19, 2013State Public Notification requested8 linked violations
February 14, 2013State Public Notification received3 linked violations
December 21, 2012State Public Notification requested4 linked violations

Common questions

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

RILEY, DIANE

573-448-3728

CLARKTON, MO 63837-0000