LOCUST GROVE, OK · Mayes County

MAYES CO RWD # 9 Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 1 other open item(s). See the violation history below for contaminant and status details.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – September 19, 2025
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
November 1, 2024 – November 30, 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
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 2, 2022 – January 5, 2024
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2022 – June 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2021 – March 31, 2021
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2020 – August 31, 2020
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)
—
Total Haloacetic Acids (HAA5)
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Regular
—
Carbon tetrachloride
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
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Benzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Toluene
January 1, 2014 – December 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2013 – December 31, 2013
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
TTHM
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2005 – December 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2005 – September 30, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 1996 – February 29, 1996
Resolved

Resolved 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
July 1, 2025 – September 19, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring and Reporting (DBP)	Chlorine	—	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
October 2, 2022 – January 5, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
June 1, 2022 – June 30, 2022	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2021 – March 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2020 – August 31, 2020	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	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)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Carbon tetrachloride	—	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
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	CHLOROBENZENE	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Benzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Toluene	—	Resolved
October 1, 2013 – December 31, 2013	Monitoring and Reporting (DBP)	TTHM	—	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	TTHM	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
October 1, 2005 – December 31, 2005	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 1999 – July 31, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
February 1, 1996 – February 29, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved 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)

Enforcement actions

September 19, 2025State Public Notification received1 linked violation
September 19, 2025State Public Notification received1 linked violation
September 19, 2025State Public Notification received1 linked violation
September 19, 2025State Compliance achieved2 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 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 Public Notification requested1 linked violation
March 12, 2021State Violation/Reminder Notice1 linked violation
March 12, 2021State Public Notification requested1 linked violation
March 12, 2021State Violation/Reminder Notice1 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 received2 linked violations
March 16, 2018State Compliance achieved4 linked violations
November 22, 2017State Public Notification received2 linked violations
November 22, 2017State Compliance achieved1 linked violation
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 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 Administrative/Compliance Order with penalty issued1 linked violation
April 2, 2009State Public Notification requested1 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 received2 linked violations
December 5, 2006State Public Notification received1 linked violation
October 3, 2006State Public Notification requested1 linked violation
September 20, 2006State Public Notification requested3 linked violations
April 7, 2006State Public Notification requested4 linked violations
April 7, 2006State Administrative/Compliance Order with penalty issued23 linked violations
March 10, 2006State Public Notification received7 linked violations
September 22, 2005State Compliance achieved1 linked violation
April 7, 2005State Public Notification requested3 linked violations
February 3, 2005State Public Notification received3 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

Contact

MAYES CO RWD # 9

918-434-5000

LOCUST GROVE, OK 74352