Is KILLARNEY SHORES SUBD required to publish a Consumer Confidence Report?

Yes. KILLARNEY SHORES SUBD 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 KILLARNEY SHORES SUBD’s next Consumer Confidence Report due?

KILLARNEY SHORES SUBD’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.

IRONTON, MO · Iron County

KILLARNEY SHORES SUBD Water System

Consumer Confidence Report status

KILLARNEY SHORES SUBD 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 KILLARNEY SHORES SUBD 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): MO4036256
System type: Community Water System
Population served: 203
Service connections: 90
Ownership: privately owned
Water source: groundwater (wells)

KILLARNEY SHORES SUBD is one of 1,412 community water systems in Missouri in the 500 or fewer people size category, serving 203 people from groundwater.

As of August 1, 2026, its federal record holds 32 entries between 2008 and 2026, of which 2 remain open; none are health-based.

Of the 32, 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 Radionuclides and Revised Rad Rule, inorganic chemicals, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring, Regular
—
Arsenic
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Mercury
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Fluoride
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Chromium
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Cadmium
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Barium
January 1, 2026 – March 31, 2026
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2025 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2025 – December 31, 2025
Archived
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2024
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2024 – January 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2022 – December 31, 2024
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – December 31, 2024
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2015 – November 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2010 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2010 – June 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2010 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2009 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2009 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2009 – March 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2008 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2008 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2008 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2008 – December 31, 2008
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026 – March 31, 2026	Monitoring, Regular	Arsenic	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Mercury	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Fluoride	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Chromium	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Cadmium	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Barium	—	Archived
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2025 – December 31, 2025	Monitoring, Regular	Nitrate-Nitrite	—	Archived
January 1, 2025 – December 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
October 1, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
January 1, 2024 – January 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2023 – September 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2022 – December 31, 2024	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2022 – December 31, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
November 1, 2015 – November 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2010 – September 30, 2011	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2010 – June 30, 2011	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2010 – March 31, 2011	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2009 – September 30, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2009 – June 30, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2009 – March 31, 2010	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2008 – September 30, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2008 – June 30, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2008 – March 31, 2009	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved

Archived closed in EPA's records (typically due to age or a data correction)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 KILLARNEY SHORES SUBD required to publish a Consumer Confidence Report?: Yes. KILLARNEY SHORES SUBD 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 KILLARNEY SHORES SUBD’s next Consumer Confidence Report due?: KILLARNEY SHORES SUBD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does KILLARNEY SHORES SUBD have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 2 items for KILLARNEY SHORES SUBD 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

DEYO, BRENT

573-440-0681

IRONTON, MO 63650-0000