Is OSAGE COUNTY PWSD 4 required to publish a Consumer Confidence Report?

Yes. OSAGE COUNTY PWSD 4 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 OSAGE COUNTY PWSD 4’s next Consumer Confidence Report due?

OSAGE COUNTY PWSD 4’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.

ARGYLE, MO · Maries County

OSAGE COUNTY PWSD 4 Water System

Consumer Confidence Report status

OSAGE COUNTY PWSD 4 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 1 item for OSAGE COUNTY PWSD 4 that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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): MO3024440
System type: Community Water System
Population served: 357
Service connections: 140
Ownership: local government
Water source: groundwater (wells)

OSAGE COUNTY PWSD 4 is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 357 people from groundwater.

As of August 1, 2026, its federal record holds 20 entries between 1980 and 2025, of which 1 remains open; none are health-based.

Of the 20, 17 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 Public Notice Rule and Revised PN Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2025
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2024 – December 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2024 – September 30, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 30, 2024 – June 1, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2023 – April 30, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2021 – October 31, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2020 – October 31, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2018 – October 31, 2018
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2018 – June 30, 2018
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
March 3, 2017 – May 1, 2017
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2016 – January 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2014 – July 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
April 1, 2011 – May 1, 2017
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2011 – May 1, 2017
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2009 – July 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2005 – November 30, 2005
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
September 24, 1982 – September 23, 1983
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 24, 1980 – September 23, 1982
Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
December 1, 2024 – December 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2024 – September 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 30, 2024 – June 1, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2023 – April 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2021 – October 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2020 – October 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2018 – October 31, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2018 – June 30, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
March 3, 2017 – May 1, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2016 – January 31, 2016	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2014 – July 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2013 – May 31, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2011 – May 1, 2017	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2011 – May 1, 2017	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2010 – October 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2009 – July 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2005 – November 30, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 24, 1982 – September 23, 1983	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
June 24, 1980 – September 23, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is OSAGE COUNTY PWSD 4 required to publish a Consumer Confidence Report?: Yes. OSAGE COUNTY PWSD 4 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 OSAGE COUNTY PWSD 4’s next Consumer Confidence Report due?: OSAGE COUNTY PWSD 4’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OSAGE COUNTY PWSD 4 have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for OSAGE COUNTY PWSD 4 that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

REINKEMEYER, LEONARD

573-257-1015

ARGYLE, MO 65001-0000