Is LAKE OZARK PWS required to publish a Consumer Confidence Report?

Yes. LAKE OZARK 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 LAKE OZARK PWS’s next Consumer Confidence Report due?

LAKE OZARK 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.

LAKE OZARK, MO · Miller County

LAKE OZARK PWS Water System

Consumer Confidence Report status

LAKE OZARK 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 2 items for LAKE OZARK PWS that are 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): MO3010441
System type: Community Water System
Population served: 2,007
Service connections: 1,039
Ownership: local government
Water source: groundwater (wells)

LAKE OZARK PWS is one of 489 community water systems in Missouri in the 501 to 3,300 people size category, serving 2,007 people from groundwater.

As of August 1, 2026, its federal record holds 21 entries between 2003 and 2025, of which 2 remain open; none are health-based.

Of the 21, 6 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
Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
July 2, 2025
Unaddressed
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – October 31, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023 – November 1, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2022 – November 30, 2022
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 17, 2016 – August 1, 2016
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
February 12, 2016 – June 2, 2016
Resolved
Failure to Consult with State
—
Groundwater Rule
November 14, 2015 – June 2, 2016
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2014 – July 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2013 – November 30, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2012 – November 30, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 2012 – March 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 3, 2006 – December 31, 2010
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 1, 2006 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2006 – November 30, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2006 – September 30, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2004 – November 30, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – July 1, 2004
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
July 2, 2025	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
October 17, 2024 – October 31, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
July 1, 2023 – November 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
November 1, 2022 – November 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 17, 2016 – August 1, 2016	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
February 12, 2016 – June 2, 2016	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
November 14, 2015 – June 2, 2016	Failure to Consult with State	Groundwater Rule	—	Resolved
July 1, 2014 – July 31, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2013 – November 30, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2012 – November 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 2012 – March 31, 2012	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2010 – August 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 3, 2006 – December 31, 2010	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
December 1, 2006 – December 31, 2010	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 1, 2006 – November 30, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2004 – November 30, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2003 – July 1, 2004	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved

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

Enforcement actions

December 31, 2010State Compliance achieved3 linked violations
September 27, 2010State Public Notification received1 linked violation
September 7, 2010State Public Notification requested1 linked violation
September 7, 2010State Violation/Reminder Notice4 linked violations
March 8, 2007State Formal Notice of Violation issued5 linked violations
January 9, 2007State Public Notification received1 linked violation
December 18, 2006State Violation/Reminder Notice1 linked violation
December 18, 2006State Public Notification requested1 linked violation
November 27, 2006State Public Notification requested1 linked violation
November 2, 2006State Violation/Reminder Notice2 linked violations
October 6, 2006State Public Notification requested1 linked violation
January 20, 2005State Public Notification received2 linked violations
January 12, 2005State Public Notification requested2 linked violations
December 15, 2004State Violation/Reminder Notice2 linked violations
December 15, 2004State Public Notification requested2 linked violations
July 1, 2004State Compliance achieved5 linked violations

Common questions

Is LAKE OZARK PWS required to publish a Consumer Confidence Report?: Yes. LAKE OZARK 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 LAKE OZARK PWS’s next Consumer Confidence Report due?: LAKE OZARK PWS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LAKE OZARK PWS have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 2 items for LAKE OZARK PWS that are 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

FRY, HARRISON

573-365-5378

LAKE OZARK, MO 65049-0000