LOCUST GROVE, OK · Mayes County

MAYES CO RWD # 7 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): OK3004627
System type: Community Water System
Population served: 538
Service connections: 215
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
Monitoring and Reporting (DBP)
—
Chlorine
June 1, 2024 – June 30, 2024
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
March 31, 2020 – October 28, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
March 1, 2018 – May 31, 2018
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
March 1, 2018 – May 31, 2018
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – December 14, 2017
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – January 12, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2015 – September 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
TTHM
March 1, 2015 – May 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
March 1, 2015 – May 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
December 1, 2014 – February 28, 2015
Resolved
Monitoring and Reporting (DBP)
—
TTHM
December 1, 2014 – February 28, 2015
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
March 1, 2014 – May 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
March 1, 2014 – May 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
December 1, 2013 – February 28, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
December 1, 2013 – February 28, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2013 – November 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
September 1, 2013 – November 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
September 1, 2013 – November 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
December 1, 2012 – February 28, 2013
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
December 1, 2012 – February 28, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2012 – September 30, 2012
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2012 – February 28, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1999 – April 30, 1999
Archived

Addressed corrective action reported, pending final confirmationResolved 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
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Addressed
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Addressed
June 1, 2024 – June 30, 2024	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
March 31, 2020 – October 28, 2020	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
March 1, 2018 – May 31, 2018	Monitoring and Reporting (DBP)	TTHM	—	Resolved
March 1, 2018 – May 31, 2018	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2017 – December 14, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2016 – January 12, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
March 1, 2015 – May 31, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
March 1, 2015 – May 31, 2015	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
December 1, 2014 – February 28, 2015	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
December 1, 2014 – February 28, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
March 1, 2014 – May 31, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
March 1, 2014 – May 31, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
December 1, 2013 – February 28, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
December 1, 2013 – February 28, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
November 1, 2013 – November 30, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2013 – November 30, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2013 – November 30, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
December 1, 2012 – February 28, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
December 1, 2012 – February 28, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2012 – September 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2012 – February 28, 2012	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 1999 – April 30, 1999	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived

Addressed corrective action reported, pending final confirmationResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

July 17, 1998State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 14, 1998State Boil Water Ordergeneral compliance action — not tied to a specific violation on record

Contact

MAYES CO RWD # 7

918-386-2692

LOCUST GROVE, OK 74352