TISHOMINGO, OK · Johnston County

TISHOMINGO MUNICIPAL AUTHORITY Water System

Current status

No open violations on record as of July 4, 2026.

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): OK1010815
System type: Community Water System
Population served: 3,000
Service connections: 1,219
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
November 1, 2025 – November 30, 2025
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2025 – June 30, 2025
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Long Term 2 Enhanced Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2025 – July 29, 2025
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Long Term 2 Enhanced Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Long Term 2 Enhanced Surface Water Treatment Rule
November 1, 2024 – November 30, 2024
Archived
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2024 – July 31, 2024
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2024 – June 30, 2024
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2024 – June 30, 2024
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2022 – April 30, 2022
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2022 – March 31, 2022
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2021 – March 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2014 – September 30, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – June 25, 2015
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2014 – February 28, 2014
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2013 – December 31, 2013
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2013 – September 30, 2013
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2013 – June 30, 2013
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2011 – September 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2008 – September 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2008 – March 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2007 – June 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
December 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2004 – August 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – March 31, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1994 – September 30, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
June 1, 1993 – March 24, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1993 – April 30, 1993
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
November 1, 2025 – November 30, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Archived
June 1, 2025 – June 30, 2025	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
March 1, 2025 – March 31, 2025	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Health-based	Archived
January 1, 2025 – January 31, 2025	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
January 1, 2025 – July 29, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2025 – January 31, 2025	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Health-based	Archived
November 1, 2024 – November 30, 2024	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Health-based	Archived
July 1, 2024 – July 31, 2024	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
June 1, 2024 – June 30, 2024	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
June 1, 2024 – June 30, 2024	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2022 – April 30, 2022	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
March 1, 2022 – March 31, 2022	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
March 1, 2021 – March 31, 2021	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2015 – December 31, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2014 – June 25, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2014 – February 28, 2014	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
December 1, 2013 – December 31, 2013	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2013 – December 31, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2013 – June 30, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2012 – December 31, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2009 – December 31, 2009	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2007 – March 31, 2007	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
December 1, 2006 – December 31, 2006	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2004 – August 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2004 – March 31, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
September 1, 1994 – September 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1993 – March 24, 1998	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
April 1, 1993 – April 30, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

September 17, 2025State Compliance achieved1 linked violation
September 4, 2025State Public Notification received1 linked violation
September 4, 2025State Public Notification received1 linked violation
September 4, 2025State Public Notification received1 linked violation
September 4, 2025State Public Notification received1 linked violation
September 4, 2025State Public Notification received3 linked violations
August 29, 2025State Compliance achieved1 linked violation
August 13, 2025State Violation/Reminder Notice1 linked violation
August 13, 2025State Public Notification requested1 linked violation
July 29, 2025State Compliance achieved1 linked violation
May 8, 2025State Administrative/Compliance Order without penalty issued1 linked violation
May 8, 2025State Public Notification requested1 linked violation
April 3, 2025State Administrative/Compliance Order without penalty issued3 linked violations
April 3, 2025State Public Notification requested3 linked violations
March 6, 2025State Violation/Reminder Notice1 linked violation
March 6, 2025State Public Notification requested1 linked violation
January 7, 2025State Public Notification requested1 linked violation
January 7, 2025State Administrative/Compliance Order without penalty issued1 linked violation
December 30, 2024State Compliance achieved4 linked violations
October 2, 2024State Public Notification received2 linked violations
October 2, 2024State Public Notification received4 linked violations
August 30, 2024State Administrative/Compliance Order without penalty issued4 linked violations
August 30, 2024State Public Notification requested4 linked violations
September 27, 2023State Compliance achieved2 linked violations
June 22, 2022State Public Notification requested2 linked violations
May 9, 2022State Compliance achieved2 linked violations
March 2, 2022State Compliance achieved3 linked violations
January 19, 2022State Violation/Reminder Notice2 linked violations
January 19, 2022State Public Notification requested2 linked violations
January 19, 2022State Violation/Reminder Notice2 linked violations
December 15, 2021State Public Notification received4 linked violations
November 5, 2021State Public Notification requested6 linked violations
July 25, 2016State Compliance achieved3 linked violations
July 25, 2016State Compliance achieved1 linked violation
July 25, 2016State Compliance achieved4 linked violations
July 25, 2016State Compliance achieved3 linked violations
July 25, 2016State Compliance achieved3 linked violations
July 25, 2016State Compliance achieved1 linked violation
December 7, 2015State Public Notification requested2 linked violations
February 23, 2015State Compliance achieved5 linked violations
February 23, 2015State Compliance achieved2 linked violations
December 4, 2014State Administrative/Compliance Order with penalty issued2 linked violations
October 14, 2014State Compliance achieved3 linked violations
October 8, 2014State Compliance achieved2 linked violations
July 8, 2014State Public Notification received2 linked violations
June 20, 2014State Public Notification requested1 linked violation
June 20, 2014State Administrative/Compliance Order with penalty issued1 linked violation
June 5, 2014State Public Notification received3 linked violations
June 5, 2014State Compliance achieved4 linked violations
May 5, 2014State Administrative/Compliance Order with penalty issued3 linked violations
May 5, 2014State Administrative/Compliance Order with penalty issued4 linked violations
March 17, 2014State Public Notification requested3 linked violations
March 17, 2014State Administrative/Compliance Order with penalty issued13 linked violations
November 14, 2013State Public Notification requested3 linked violations
September 30, 2013State Compliance achieved11 linked violations
September 20, 2013State Public Notification received2 linked violations
June 17, 2010State Public Notification received3 linked violations
February 9, 2010State Public Notification requested4 linked violations
January 27, 2010State Public Notification requested2 linked violations
June 30, 2009State Public Notification requested7 linked violations
June 30, 2009State Violation/Reminder Notice7 linked violations
October 27, 2008State Public Notification requested2 linked violations
August 1, 2007State Compliance achieved2 linked violations
May 25, 2007State Compliance achieved4 linked violations
March 9, 2007State Compliance achieved2 linked violations
March 5, 2007State Compliance achieved2 linked violations
February 21, 2007State Public Notification requested12 linked violations
February 5, 2007State Public Notification requested6 linked violations
December 17, 2004State Public Notification received7 linked violations
March 24, 1998State Compliance achieved1 linked violation

Contact

TISHOMINGO MUNICIPAL AUTHORITY

580-371-2369

TISHOMINGO, OK 73460