Is LADDONIA PWS required to publish a Consumer Confidence Report?

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

LADDONIA 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.

LADDONIA, MO · Audrain County

LADDONIA PWS Water System

Consumer Confidence Report status

LADDONIA 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 1 item for LADDONIA PWS 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): MO2010438
System type: Community Water System
Population served: 511
Service connections: 247
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

LADDONIA PWS is one of 489 community water systems in Missouri in the 501 to 3,300 people size category, serving 511 people from surface water.

As of August 1, 2026, its federal record holds 16 entries between 1981 and 2025, of which 1 remains open; none are health-based.

Of the 16, 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 Consumer Confidence Rule, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and the Radionuclides and Revised Rad Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2025
Unaddressed
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
August 1, 2025 – August 31, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025 – November 25, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023 – November 1, 2023
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
March 3, 2023 – March 13, 2023
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
April 29, 2021 – May 27, 2021
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2021 – December 31, 2021
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
July 1, 2020 – July 31, 2020
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2015 – August 12, 2016
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2012 – October 25, 2013
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
October 26, 2011 – May 22, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – February 19, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – February 19, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 31, 1983 – October 30, 1984
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 31, 1982 – October 30, 1983
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 31, 1981 – October 30, 1982
Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
August 1, 2025 – August 31, 2025	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2025 – November 25, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2023 – November 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
March 3, 2023 – March 13, 2023	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
April 29, 2021 – May 27, 2021	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
January 1, 2021 – December 31, 2021	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2020 – July 31, 2020	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
October 1, 2015 – August 12, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2012 – October 25, 2013	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 26, 2011 – May 22, 2012	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
July 1, 2011 – February 19, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2010 – February 19, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 31, 1983 – October 30, 1984	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 31, 1982 – October 30, 1983	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived
October 31, 1981 – October 30, 1982	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Common questions

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

CRAFT, EDDY

573-373-9228

LADDONIA, MO 63352-0000