Is MAYES CO RWD # 9 required to publish a Consumer Confidence Report?

Yes. MAYES CO RWD # 9 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 MAYES CO RWD # 9’s next Consumer Confidence Report due?

MAYES CO RWD # 9’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.

LOCUST GROVE, OK · Mayes County

MAYES CO RWD # 9 Water System

Consumer Confidence Report status

MAYES CO RWD # 9 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 open health-based violation for MAYES CO RWD # 9, alongside 2 other open items.

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): OK1021678
System type: Community Water System
Population served: 2,578
Service connections: 930
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

MAYES CO RWD # 9 is one of 511 community water systems in Oklahoma in the 501 to 3,300 people size category, serving 2,578 people from surface water.

As of August 1, 2026, its federal record holds 57 entries between 1999 and 2026, of which 1 health-based item remains open, alongside 2 other open entries.

Of the 57, 48 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 volatile organic chemicals, the Surface Water Treatment Rules, and the Lead and Copper Rule.

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2026
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – September 19, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2024 – December 31, 2024
Resolved
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2024 – January 9, 2025
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2023 – April 30, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Benzene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Toluene
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Styrene
January 1, 2023 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2021 – March 31, 2021
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2020 – June 30, 2020
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – January 5, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2016 – May 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2016 – April 30, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
March 1, 2016 – March 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2016 – February 29, 2016
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
January 1, 2016 – January 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2014 – December 31, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – October 8, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – October 8, 2015
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2010 – May 31, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2009 – August 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2008 – December 31, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2004 – December 31, 2004
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2001 – August 28, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1999 – December 31, 2001
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
July 1, 2025 – September 19, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2024 – December 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Addressed
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Addressed
October 1, 2024 – January 9, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2023 – April 30, 2023	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Xylenes, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Benzene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Toluene	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Styrene	—	Archived
January 1, 2021 – March 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2020 – June 30, 2020	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
September 1, 2016 – September 30, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2016 – January 5, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2016 – May 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2016 – April 30, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
March 1, 2016 – March 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
February 1, 2016 – February 29, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2016 – January 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2013 – October 8, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2012 – October 8, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2010 – May 31, 2010	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 2009 – August 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2004 – December 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2001 – August 28, 2001	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2-Dichloropropane	—	Resolved

Enforcement actions

February 19, 2026State Violation/Reminder Notice22 linked violations
February 19, 2026State Public Notification requested22 linked violations
September 19, 2025State Public Notification received1 linked violation
September 19, 2025State Compliance achieved2 linked violations
September 19, 2025State Public Notification received1 linked violation
September 19, 2025State Public Notification received1 linked violation
August 13, 2025State Violation/Reminder Notice143 linked violations
July 11, 2025State Violation/Reminder Notice1 linked violation
July 11, 2025State Violation/Reminder Notice1 linked violation
March 10, 2025State Compliance achieved1 linked violation
March 10, 2025State Compliance achieved1 linked violation
March 6, 2025State Public Notification requested1 linked violation
January 29, 2025State Public Notification requested9 linked violations
January 9, 2025State Compliance achieved2 linked violations
November 22, 2024State Violation/Reminder Notice1 linked violation
November 22, 2024State Public Notification requested3 linked violations
June 13, 2024State Public Notification received1 linked violation
January 5, 2024State Compliance achieved2 linked violations
July 5, 2023State Compliance achieved2 linked violations
June 21, 2023State Violation/Reminder Notice33 linked violations
September 29, 2022State Public Notification requested2 linked violations
March 12, 2022State Public Notification received2 linked violations
March 12, 2022State Public Notification received1 linked violation
February 12, 2022State Public Notification received2 linked violations
November 18, 2021State Violation/Reminder Notice2 linked violations
November 16, 2021State Compliance achieved2 linked violations
November 16, 2021State Compliance achieved2 linked violations
November 16, 2021State Compliance achieved2 linked violations
November 6, 2021State Public Notification received2 linked violations
March 12, 2021State Violation/Reminder Notice1 linked violation
March 12, 2021State Public Notification requested1 linked violation
March 12, 2021State Violation/Reminder Notice1 linked violation
March 12, 2021State Public Notification requested1 linked violation
February 12, 2021State Violation/Reminder Notice1 linked violation
February 12, 2021State Public Notification requested1 linked violation
November 6, 2020State Violation/Reminder Notice2 linked violations
September 18, 2020State Violation/Reminder Notice128 linked violations
September 18, 2020State Public Notification requested1 linked violation
November 11, 2019State Public Notification received2 linked violations
July 24, 2018State Public Notification received3 linked violations
February 13, 2018State Public Notification requested2 linked violations
November 22, 2017State Public Notification received1 linked violation
November 22, 2017State Public Notification received122 linked violations
November 22, 2017State Public Notification received1 linked violation
November 22, 2017State Public Notification received2 linked violations
November 22, 2017State Public Notification received24 linked violations
November 22, 2017State Public Notification received2 linked violations
November 22, 2017State Compliance achieved1 linked violation
November 17, 2017State Violation/Reminder Notice1 linked violation
November 2, 2017State Compliance achieved21 linked violations
May 23, 2017State Public Notification requested1 linked violation
May 23, 2017State Violation/Reminder Notice1 linked violation
April 20, 2017State Violation/Reminder Notice1 linked violation
April 20, 2017State Public Notification requested21 linked violations
April 20, 2017State Violation/Reminder Notice21 linked violations
April 20, 2017State Public Notification requested1 linked violation
January 5, 2017State Compliance achieved1 linked violation
January 3, 2017State Violation/Reminder Notice1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Public Notification requested1 linked violation
December 23, 2016State Violation/Reminder Notice1 linked violation
December 23, 2016State Violation/Reminder Notice1 linked violation
December 23, 2016State Violation/Reminder Notice1 linked violation
December 23, 2016State Violation/Reminder Notice1 linked violation
December 23, 2016State Violation/Reminder Notice1 linked violation
December 23, 2016State Violation/Reminder Notice1 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 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 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 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 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 achieved1 linked violation
October 8, 2015State Compliance achieved2 linked violations
December 4, 2014State Compliance achieved2 linked violations
October 7, 2014State Compliance achieved2 linked violations
August 20, 2014State Public Notification requested2 linked violations
August 20, 2014State Violation/Reminder Notice2 linked violations
August 9, 2010State Violation/Reminder Notice1 linked violation
August 9, 2010State Public Notification requested1 linked violation
April 7, 2010State Compliance achieved1 linked violation
February 25, 2010State Violation/Reminder Notice1 linked violation
February 11, 2010State Compliance achieved2 linked violations
December 21, 2009State Compliance achieved2 linked violations
December 14, 2009State Public Notification requested1 linked violation
December 14, 2009State Violation/Reminder Notice1 linked violation
July 30, 2009State Public Notification received2 linked violations
July 22, 2009State Public Notification requested1 linked violation
May 29, 2009State Public Notification requested2 linked violations
May 29, 2009State Administrative/Compliance Order with penalty issued2 linked violations
May 1, 2009State Public Notification received1 linked violation
April 2, 2009State Public Notification requested1 linked violation
April 2, 2009State Administrative/Compliance Order with penalty issued1 linked violation
March 25, 2009State Public Notification requested1 linked violation
September 18, 2007State Public Notification received1 linked violation
August 14, 2007State Compliance achieved21 linked violations
August 7, 2007State Administrative/Compliance Order with penalty issued1 linked violation
August 7, 2007State Public Notification requested1 linked violation
February 6, 2007State Violation/Reminder Notice1 linked violation
December 5, 2006State Public Notification received3 linked violations
December 5, 2006State Public Notification received1 linked violation
December 5, 2006State Public Notification received2 linked violations
October 3, 2006State Public Notification requested1 linked violation
September 20, 2006State Public Notification requested3 linked violations
May 1, 2006State Public Notification received4 linked violations
May 1, 2006State Public Notification received3 linked violations
April 7, 2006State Public Notification requested4 linked violations
September 22, 2005State Compliance achieved1 linked violation
April 7, 2005State Administrative/Compliance Order with penalty issued5 linked violations
February 3, 2005State Public Notification received3 linked violations
January 14, 2005State Administrative/Compliance Order with penalty issued13 linked violations
February 25, 2002State Compliance achieved20 linked violations
February 4, 2002State Administrative/Compliance Order with penalty issued20 linked violations
August 28, 2001State Compliance achieved2 linked violations
July 30, 2001State Administrative/Compliance Order with penalty issued2 linked violations

Common questions

Is MAYES CO RWD # 9 required to publish a Consumer Confidence Report?: Yes. MAYES CO RWD # 9 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 MAYES CO RWD # 9’s next Consumer Confidence Report due?: MAYES CO RWD # 9’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MAYES CO RWD # 9 have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 open health-based violation for MAYES CO RWD # 9, alongside 2 other open items.
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

MAYES CO RWD # 9

918-434-5000

LOCUST GROVE, OK 74352