Is COMANCHE CO RWD #4 required to publish a Consumer Confidence Report?

Yes. COMANCHE CO RWD #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 COMANCHE CO RWD #4’s next Consumer Confidence Report due?

COMANCHE CO RWD #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.

CACHE, OK · Comanche County

COMANCHE CO RWD #4 Water System

Consumer Confidence Report status

COMANCHE CO RWD #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 no open violations for COMANCHE CO RWD #4.

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 Oklahoma’s official records. Always confirm current status with Oklahoma before making decisions based on this information.

System facts

System ID (PWSID): OK3001654
System type: Community Water System
Population served: 3,000
Service connections: 1,579
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

COMANCHE CO RWD #4 is one of 511 community water systems in Oklahoma in the 501 to 3,300 people size category, serving 3,000 people from surface water.

As of August 1, 2026, its federal record holds 37 entries between 2013 and 2025, all of which EPA lists as closed.

Of the 37, 10 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, the Lead and Copper Rule, and the Consumer Confidence Rule.

Violation history

Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2025 – December 3, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2025 – June 30, 2025
Archived
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – July 15, 2025
Resolved
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – July 15, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2021 – December 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2021 – September 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2021 – June 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2021 – June 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2021 – March 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2020 – September 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2020 – September 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2019 – December 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2019 – December 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2019 – June 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2019 – March 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2018 – December 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2018 – September 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2018 – June 30, 2018
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2018 – June 21, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2018 – March 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2017 – June 30, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2017 – March 31, 2017
Archived
Initial, Follow-up, or Routine Source Water M/R
—
Lead and Copper Rule
January 1, 2017 – June 21, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2016 – December 31, 2016
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
May 1, 2016 – July 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
May 1, 2016 – July 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2016 – June 30, 2016
Archived
Initial, Follow-up, or Routine Source Water M/R
—
Lead and Copper Rule
January 1, 2016 – June 21, 2018
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
December 30, 2015 – March 31, 2016
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2015 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2015 – September 30, 2015
Archived
Monitoring and Reporting (DBP)
—
TTHM
February 1, 2015 – April 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2014 – December 31, 2014
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – February 19, 2015
Resolved

Resolved 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
September 29, 2025 – December 3, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 17, 2024 – July 15, 2025	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
October 17, 2024 – July 15, 2025	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2018 – June 21, 2018	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2017 – June 21, 2018	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	—	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
May 1, 2016 – July 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
May 1, 2016 – July 31, 2016	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2016 – June 21, 2018	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	—	Resolved
December 30, 2015 – March 31, 2016	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
December 30, 2015 – March 31, 2016	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
February 1, 2015 – April 30, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2013 – February 19, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved

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

Enforcement actions

December 22, 2021State Public Notification requested686 linked violations
March 6, 2020State Violation/Reminder Notice314 linked violations

Common questions

Is COMANCHE CO RWD #4 required to publish a Consumer Confidence Report?: Yes. COMANCHE CO RWD #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 COMANCHE CO RWD #4’s next Consumer Confidence Report due?: COMANCHE CO RWD #4’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does COMANCHE CO RWD #4 have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for COMANCHE CO RWD #4.
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

COMANCHE COUNTY RWD #4

580-429-8280

CACHE, OK 73527