Is AVANT UTILITIES AUTHORITY required to publish a Consumer Confidence Report?

Yes. AVANT UTILITIES AUTHORITY 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 AVANT UTILITIES AUTHORITY’s next Consumer Confidence Report due?

AVANT UTILITIES AUTHORITY’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.

AVANT, OK · Osage County

AVANT UTILITIES AUTHORITY Water System

Consumer Confidence Report status

AVANT UTILITIES AUTHORITY 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 4 items for AVANT UTILITIES AUTHORITY 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 Oklahoma’s official records. Always confirm current status with Oklahoma before making decisions based on this information.

System facts

System ID (PWSID): OK1021305
System type: Community Water System
Population served: 361
Service connections: 169
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

AVANT UTILITIES AUTHORITY is one of 1,277 community water systems in Oklahoma in the 500 or fewer people size category, serving 361 people from surface water.

As of August 1, 2026, its federal record holds 101 entries between 1995 and 2026, of which 4 remain open; none are health-based.

Of the 101, 39 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 Surface Water Treatment Rules, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2026 – February 28, 2026
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2026 – January 31, 2026
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2025
Unaddressed
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
December 30, 2025
Unaddressed
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2025 – December 31, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2025 – November 30, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2025 – October 31, 2025
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2025
Unaddressed
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
September 29, 2025
Unaddressed
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2025 – September 30, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2025 – July 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2025 – September 30, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2025 – May 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2025 – March 31, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2024 – March 31, 2024
Archived
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 2, 2023 – August 6, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2023 – September 30, 2023
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
June 30, 2023 – November 3, 2023
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2023 – November 3, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2023 – June 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2023 – June 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2022 – December 31, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2022 – September 30, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2022 – September 30, 2022
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
June 30, 2022 – November 7, 2022
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2022 – November 7, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2022 – June 30, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2022 – June 30, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2022 – March 31, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2022 – March 31, 2022
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
December 30, 2021 – February 28, 2022
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2021 – February 28, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2021 – December 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2021 – December 31, 2021
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2021 – October 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2021 – September 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2021 – September 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
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
Total Haloacetic Acids (HAA5)
January 1, 2021 – March 31, 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
October 1, 2020 – December 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
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
April 1, 2020 – June 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2020 – June 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
Total Haloacetic Acids (HAA5)
January 1, 2020 – March 31, 2020
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2019 – December 31, 2019
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2019 – November 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2019 – December 31, 2019
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2019 – October 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2019 – December 31, 2019
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
September 29, 2019 – December 26, 2019
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2019 – December 26, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2019 – September 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2019 – September 30, 2019
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2019 – May 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2019 – June 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
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
July 1, 2018 – September 30, 2018
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2018 – September 7, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2018 – June 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2018 – March 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2018 – March 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2017 – December 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2017 – March 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2016 – December 31, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2016 – September 30, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2016 – June 30, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2016 – March 31, 2016
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2012 – January 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2010 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2010 – June 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2010 – March 31, 2010
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2008 – September 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2008 – September 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2007 – December 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2007 – March 31, 2007
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2006 – August 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Nitrate
April 1, 2001 – June 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 1997 – April 30, 1997
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 1995 – March 31, 1995
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
February 1, 2026 – February 28, 2026	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
January 1, 2026 – January 31, 2026	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
December 30, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Unaddressed
December 30, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Unaddressed
December 1, 2025 – December 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
November 1, 2025 – November 30, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
October 1, 2025 – October 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
September 29, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Unaddressed
September 29, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Unaddressed
September 1, 2025 – September 30, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
July 1, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
May 1, 2025 – May 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2025 – January 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 2, 2023 – August 6, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
June 30, 2023 – November 3, 2023	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
June 30, 2023 – November 3, 2023	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2022 – December 31, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
June 30, 2022 – November 7, 2022	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
June 30, 2022 – November 7, 2022	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
December 30, 2021 – February 28, 2022	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
December 30, 2021 – February 28, 2022	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2021 – October 31, 2021	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	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	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	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	Total Haloacetic Acids (HAA5)	Health-based	Archived
December 1, 2019 – December 31, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2019 – November 30, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2019 – October 31, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
September 29, 2019 – December 26, 2019	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
September 29, 2019 – December 26, 2019	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
May 1, 2019 – May 31, 2019	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
June 30, 2018 – September 7, 2018	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
May 1, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2012 – January 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2010 – March 31, 2010	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2008 – September 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2007 – December 31, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
August 1, 2006 – August 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2001 – June 30, 2001	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1999 – July 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
April 1, 1997 – April 30, 1997	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 1995 – March 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	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

March 30, 2026State Compliance achieved1 linked violation
March 30, 2026State Compliance achieved1 linked violation
March 25, 2026State Administrative/Compliance Order with penalty issued4 linked violations
March 23, 2026State Violation/Reminder Notice1 linked violation
March 23, 2026State Public Notification requested9 linked violations
February 19, 2026State Violation/Reminder Notice3 linked violations
February 19, 2026State Public Notification requested3 linked violations
February 19, 2026State Violation/Reminder Notice3 linked violations
January 27, 2026State Public Notification requested1 linked violation
January 27, 2026State Violation/Reminder Notice1 linked violation
December 31, 2025State Public Notification requested1 linked violation
November 21, 2025State Public Notification requested1 linked violation
November 5, 2025State Violation/Reminder Notice1 linked violation
October 29, 2025State Administrative/Compliance Order without penalty issued2 linked violations
October 15, 2025State Public Notification requested1 linked violation
October 2, 2025State Administrative/Compliance Order without penalty issued5 linked violations
September 19, 2025State Public Notification requested1 linked violation
August 13, 2025State Violation/Reminder Notice9 linked violations
July 23, 2025State Violation/Reminder Notice1 linked violation
July 11, 2025State Violation/Reminder Notice1 linked violation
June 26, 2025State Compliance achieved1 linked violation
June 3, 2025State Violation/Reminder Notice10 linked violations
May 23, 2025State Public Notification requested2 linked violations
May 21, 2025State Compliance achieved1 linked violation
April 9, 2025State Public Notification requested1 linked violation
April 9, 2025State Public Notification requested1 linked violation
March 6, 2025State Violation/Reminder Notice1 linked violation
March 6, 2025State Public Notification requested1 linked violation
February 26, 2025State Violation/Reminder Notice2 linked violations
January 28, 2025State Compliance achieved4 linked violations
January 2, 2025State Violation/Reminder Notice1 linked violation
January 2, 2025State Public Notification requested1 linked violation
November 12, 2024State Public Notification requested8 linked violations
October 21, 2024State Public Notification requested9 linked violations
September 26, 2024State Violation/Reminder Notice9 linked violations
August 7, 2024State Public Notification received1 linked violation
August 6, 2024State Compliance achieved9 linked violations
July 17, 2024State Public Notification requested1 linked violation
April 30, 2024State Public Notification requested25 linked violations
February 9, 2024State Violation/Reminder Notice2 linked violations
November 15, 2023State Violation/Reminder Notice20 linked violations
November 3, 2023State Compliance achieved7 linked violations
August 25, 2023State Violation/Reminder Notice9 linked violations
August 18, 2023State Violation/Reminder Notice10 linked violations
July 14, 2023State Public Notification requested2 linked violations
March 31, 2023State Compliance achieved7 linked violations
March 14, 2023State Violation/Reminder Notice9 linked violations
February 27, 2023State Public Notification requested10 linked violations
February 27, 2023State Violation/Reminder Notice2 linked violations
October 27, 2022State Violation/Reminder Notice9 linked violations
October 27, 2022State Violation/Reminder Notice1 linked violation
August 24, 2022State Public Notification requested10 linked violations
August 24, 2022State Violation/Reminder Notice8 linked violations
March 25, 2022State Public Notification received8 linked violations
March 22, 2022State Violation/Reminder Notice1 linked violation
February 17, 2022State Violation/Reminder Notice8 linked violations
February 17, 2022State Public Notification requested2 linked violations
January 4, 2022State Public Notification requested11 linked violations
November 12, 2021State Public Notification requested2 linked violations
September 3, 2021State Public Notification received2 linked violations
August 12, 2021State Violation/Reminder Notice2 linked violations
August 12, 2021State Public Notification requested2 linked violations
June 1, 2021State Public Notification received2 linked violations
May 18, 2021State Public Notification requested16 linked violations
February 2, 2021State Public Notification requested15 linked violations
November 23, 2020State Compliance achieved11 linked violations
November 12, 2020State Public Notification requested2 linked violations
September 21, 2020State Public Notification received9 linked violations
August 27, 2020State Public Notification requested10 linked violations
June 5, 2020State Compliance achieved11 linked violations
May 15, 2020State Violation/Reminder Notice2 linked violations
May 15, 2020State Public Notification requested2 linked violations
March 11, 2020State Public Notification received3 linked violations
February 12, 2020State Administrative/Compliance Order without penalty issued3 linked violations
February 3, 2020State Public Notification requested2 linked violations
December 26, 2019State Compliance achieved8 linked violations
December 12, 2019State Violation/Reminder Notice2 linked violations
November 25, 2019State Public Notification received2 linked violations
November 5, 2019State Violation/Reminder Notice2 linked violations
September 24, 2019State Compliance achieved1 linked violation
August 15, 2019State Public Notification received2 linked violations
August 15, 2019State Public Notification received1 linked violation
July 23, 2019State Public Notification requested2 linked violations
July 18, 2019State Public Notification requested1 linked violation
July 1, 2019State Public Notification received2 linked violations
May 1, 2019State Violation/Reminder Notice2 linked violations
February 8, 2019State Public Notification received1 linked violation
January 14, 2019State Public Notification requested1 linked violation
December 4, 2018State Administrative/Compliance Order with penalty issued69 linked violations
November 2, 2018State Public Notification received2 linked violations
October 19, 2018State Compliance achieved4 linked violations
October 19, 2018State Violation/Reminder Notice2 linked violations
October 3, 2018State Public Notification requested2 linked violations
September 7, 2018State Compliance achieved1 linked violation
August 28, 2018State Violation/Reminder Notice1 linked violation
May 14, 2018State Administrative/Compliance Order without penalty issued2 linked violations
May 7, 2018State Public Notification received3 linked violations
April 25, 2018State Public Notification requested3 linked violations
April 25, 2018State Violation/Reminder Notice3 linked violations
March 6, 2018State Public Notification received2 linked violations
February 20, 2018State Compliance achieved2 linked violations
February 8, 2018State Public Notification requested2 linked violations
November 9, 2017State Administrative/Compliance Order with penalty issued2 linked violations
September 22, 2017State Public Notification received5 linked violations
September 22, 2017State Public Notification received1 linked violation
July 17, 2017State Public Notification requested3 linked violations
July 7, 2017State Violation/Reminder Notice3 linked violations
May 10, 2017State Public Notification received2 linked violations
April 25, 2017State Administrative/Compliance Order with penalty issued3 linked violations
April 25, 2017State Public Notification requested3 linked violations
April 20, 2017State Public Notification requested2 linked violations
February 8, 2017State Administrative/Compliance Order with penalty issued9 linked violations
December 30, 2016State Compliance achieved2 linked violations
December 23, 2016State Violation/Reminder Notice1 linked violation
July 26, 2016State Compliance achieved11 linked violations
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved10 linked violations
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved7 linked violations
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved9 linked violations
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achieved2 linked violations
July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 26, 2016State Compliance achieved1 linked violation
July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 14, 2015State Violation/Reminder Notice2 linked violations
April 4, 2014State Public Notification received2 linked violations
March 14, 2014State Public Notification requested2 linked violations
October 24, 2011State Compliance achieved8 linked violations
August 23, 2011State Public Notification received2 linked violations
May 3, 2011State Administrative/Compliance Order with penalty issued1 linked violation
January 26, 2011State Public Notification requested3 linked violations
January 26, 2011State Administrative/Compliance Order with penalty issued5 linked violations
December 10, 2010State Public Notification received3 linked violations
November 18, 2010State Violation/Reminder Notice3 linked violations
May 6, 2009State Public Notification requested26 linked violations
October 27, 2008State Violation/Reminder Notice8 linked violations
June 24, 2008State Public Notification requested2 linked violations
March 25, 2008State Public Notification requested10 linked violations
January 1, 2008State Compliance achieved16 linked violations
July 31, 2007State Public Notification received12 linked violations
June 28, 2007State Compliance achieved2 linked violations
May 2, 2007State Public Notification requested8 linked violations
April 19, 2007State Public Notification received10 linked violations
April 17, 2007State Public Notification requested2 linked violations
March 20, 2007State Public Notification received1 linked violation
January 8, 2007State Public Notification received22 linked violations
November 6, 2006State Public Notification received12 linked violations
November 6, 2006State Public Notification received7 linked violations
October 12, 2006State Compliance achieved1 linked violation
October 6, 2006State Violation/Reminder Notice4 linked violations
October 6, 2006State Public Notification requested1 linked violation
October 3, 2006State Public Notification requested2 linked violations
October 3, 2006State Public Notification requested5 linked violations
August 30, 2006State Public Notification requested10 linked violations
April 11, 2006State Administrative/Compliance Order with penalty issued4 linked violations
April 11, 2006State Public Notification requested4 linked violations
December 29, 2005State Public Notification requested5 linked violations
December 29, 2005State Administrative/Compliance Order with penalty issued15 linked violations
October 3, 2003State Public Notification received1 linked violation
September 7, 2001State Compliance achieved1 linked violation
August 27, 2001State Administrative/Compliance Order with penalty issued1 linked violation
July 30, 2001State Administrative/Compliance Order with penalty issued4 linked violations
April 26, 1995State Consent Decree/Judgement5 linked violations
January 15, 1995State Compliance achieved1 linked violation

Common questions

Is AVANT UTILITIES AUTHORITY required to publish a Consumer Confidence Report?: Yes. AVANT UTILITIES AUTHORITY 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 AVANT UTILITIES AUTHORITY’s next Consumer Confidence Report due?: AVANT UTILITIES AUTHORITY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does AVANT UTILITIES AUTHORITY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 4 items for AVANT UTILITIES AUTHORITY 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

AVANT UTILITIES AUTHORITY

918-263-3205

AVANT, OK 74001