ATOKA, OK · Atoka County

ATOKA CO. RWS & SWMD #4 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): OK1010412
System type: Community Water System
Population served: 3,000
Service connections: 3,197
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
November 1, 2025 – November 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine dioxide
November 1, 2025 – November 30, 2025
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine dioxide
July 1, 2025 – July 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2025 – June 30, 2025
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
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
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2024 – June 30, 2024
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2024 – March 31, 2024
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2024 – March 31, 2024
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2023 – December 31, 2023
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2023 – September 30, 2023
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2023 – June 30, 2023
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2022 – December 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine dioxide
September 1, 2022 – September 30, 2022
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2022 – September 30, 2022
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2022 – September 30, 2022
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2022 – June 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2021 – September 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2017 – September 30, 2017
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2017 – June 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2017 – June 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2017 – March 31, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2017 – March 31, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2016 – September 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2016 – September 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2016 – June 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2016 – June 30, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2016 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2016 – March 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2015 – December 31, 2015
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2015 – November 20, 2015
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
September 29, 2015 – November 20, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2015 – June 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2013 – September 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2013 – June 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2012 – January 31, 2012
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2012 – March 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2011 – December 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2011 – December 31, 2011
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2011 – December 31, 2011
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2011 – September 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2011 – September 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2011 – June 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2011 – June 30, 2011
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2011 – June 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2011 – June 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2011 – June 30, 2011
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2011 – March 31, 2011
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2010 – December 31, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Benzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Toluene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2010 – September 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2010 – September 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2010 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2010 – September 30, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2010 – May 31, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2010 – March 31, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2010 – March 31, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2009 – December 31, 2009
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2009 – October 22, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Routine (IDSE)
—
TTHM
August 1, 2009 – October 31, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2009 – June 30, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2009 – June 30, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2009 – March 31, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2008 – December 31, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2008 – June 30, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2008 – March 31, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2007 – December 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2007 – September 30, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2007 – September 30, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2006 – May 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2006 – March 31, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2005 – December 31, 2005
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2005 – March 31, 2005
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, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Archived
November 1, 2025 – November 30, 2025	Monitoring and Reporting (DBP)	Chlorine dioxide	—	Archived
July 1, 2025 – September 30, 2025	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2025 – July 31, 2025	Monitoring and Reporting (DBP)	Chlorine dioxide	—	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2025 – June 30, 2025	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2024 – December 31, 2024	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2024 – September 30, 2024	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2024 – June 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
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2024 – March 31, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2024 – March 31, 2024	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2023 – December 31, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2023 – September 30, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2023 – June 30, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2022 – December 31, 2022	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
September 1, 2022 – September 30, 2022	Monitoring and Reporting (DBP)	Chlorine dioxide	—	Resolved
September 1, 2022 – September 30, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2022 – September 30, 2022	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2022 – June 30, 2022	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2021 – September 30, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2017 – September 30, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2017 – June 30, 2017	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
September 29, 2015 – November 20, 2015	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
September 29, 2015 – November 20, 2015	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	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	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2012 – March 31, 2012	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2012 – January 31, 2012	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2012 – March 31, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2011 – December 31, 2011	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2011 – December 31, 2011	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2011 – September 30, 2011	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2011 – September 30, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2011 – June 30, 2011	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2011 – June 30, 2011	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2011 – June 30, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2011 – March 31, 2011	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2011 – March 31, 2011	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2010 – December 31, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Benzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Toluene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2010 – September 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
May 1, 2010 – May 31, 2010	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2010 – June 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2010 – June 30, 2010	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2010 – March 31, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2009 – December 31, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2009 – December 31, 2009	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2009 – October 22, 2010	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
August 1, 2009 – October 31, 2009	Monitoring, Routine (IDSE)	TTHM	—	Resolved
July 1, 2009 – September 30, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
June 1, 2009 – June 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2009 – June 30, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2009 – March 31, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2008 – December 31, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2008 – September 30, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2008 – June 30, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2008 – March 31, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2007 – December 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2007 – September 30, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2007 – June 30, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2007 – March 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2006 – December 31, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
May 1, 2006 – May 31, 2006	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2006 – March 31, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2005 – December 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2005 – March 31, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	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 29, 2025State Public Notification received8 linked violations
September 19, 2025State Public Notification requested5 linked violations
August 28, 2025State Compliance achieved6 linked violations
June 18, 2025State no longer subject to Rule6 linked violations
June 18, 2025State no longer subject to Rule23 linked violations
May 23, 2025State Violation/Reminder Notice11 linked violations
April 9, 2025State Violation/Reminder Notice8 linked violations
April 9, 2025State Violation/Reminder Notice7 linked violations
February 26, 2025State Public Notification requested94 linked violations
August 30, 2024State Public Notification requested9 linked violations
August 30, 2024State Violation/Reminder Notice8 linked violations
March 6, 2024State Compliance achieved4 linked violations
February 9, 2024State Public Notification requested5 linked violations
December 28, 2023State Public Notification received9 linked violations
November 30, 2023State Public Notification requested4 linked violations
November 30, 2023State Public Notification requested5 linked violations
November 16, 2023State Administrative/Compliance Order with penalty issued34 linked violations
November 15, 2023State Public Notification requested4 linked violations
August 17, 2023State Public Notification requested4 linked violations
August 1, 2023State Public Notification received4 linked violations
April 4, 2023State Public Notification received4 linked violations
April 4, 2023State Public Notification received2 linked violations
December 22, 2022State Violation/Reminder Notice13 linked violations
December 22, 2022State Public Notification requested6 linked violations
September 2, 2022State Public Notification received3 linked violations
March 8, 2022State Public Notification received4 linked violations
December 6, 2021State Public Notification received4 linked violations
November 2, 2021State Compliance achieved4 linked violations
October 20, 2021State Violation/Reminder Notice4 linked violations
August 13, 2021State Violation/Reminder Notice2 linked violations
August 13, 2021State Violation/Reminder Notice4 linked violations
December 14, 2018State Public Notification requested4 linked violations
December 1, 2017State Violation/Reminder Notice3 linked violations
November 9, 2017State Public Notification requested5 linked violations
July 28, 2017State Public Notification requested7 linked violations
May 15, 2017State Public Notification received4 linked violations
March 13, 2017State Public Notification received8 linked violations
July 28, 2016State Public Notification requested5 linked violations
July 19, 2016State Administrative/Compliance Order with penalty issued28 linked violations
June 8, 2016State Compliance achieved8 linked violations
March 9, 2016State Public Notification requested2 linked violations
March 9, 2016State Administrative/Compliance Order with penalty issued3 linked violations
December 31, 2015State Public Notification received2 linked violations
December 2, 2015State Public Notification requested2 linked violations
December 2, 2015State Administrative/Compliance Order with penalty issued2 linked violations
November 20, 2015State Compliance achieved2 linked violations
November 13, 2015State Violation/Reminder Notice2 linked violations
September 30, 2015State Public Notification received2 linked violations
September 9, 2015State Public Notification requested2 linked violations
June 12, 2015State Intentional no-action35 linked violations
February 13, 2015State Compliance achieved51 linked violations
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved3 linked violations
May 8, 2014State Compliance achieved1 linked violation
April 8, 2014State Public Notification received1 linked violation
April 8, 2014State Public Notification received2 linked violations
January 23, 2014State Violation/Reminder Notice2 linked violations
January 23, 2014State Violation/Reminder Notice2 linked violations
October 27, 2010State Violation/Reminder Notice2 linked violations
October 27, 2010State Public Notification requested2 linked violations
August 9, 2010State Public Notification requested2 linked violations
July 29, 2010State Public Notification received3 linked violations
July 6, 2010State Violation/Reminder Notice1 linked violation
March 29, 2010State Public Notification requested3 linked violations
February 9, 2010State Violation/Reminder Notice2 linked violations
February 9, 2010State Public Notification requested2 linked violations
January 27, 2010State Public Notification requested1 linked violation
January 7, 2010State Public Notification requested2 linked violations
December 10, 2009State Administrative/Compliance Order with penalty issued82 linked violations
October 22, 2009State Public Notification requested3 linked violations
October 22, 2009State Violation/Reminder Notice2 linked violations
September 30, 2009State Public Notification received1 linked violation
September 24, 2009State Violation/Reminder Notice2 linked violations
July 10, 2009State Public Notification requested2 linked violations
May 12, 2009State Public Notification received2 linked violations
May 8, 2009State Violation/Reminder Notice3 linked violations
January 30, 2009State Public Notification requested2 linked violations
November 6, 2008State Public Notification received2 linked violations
October 31, 2008State Violation/Reminder Notice3 linked violations
September 5, 2008State Public Notification requested4 linked violations
June 9, 2008State Public Notification received4 linked violations
June 9, 2008State Public Notification received4 linked violations
May 27, 2008State Violation/Reminder Notice4 linked violations
January 30, 2008State Public Notification requested4 linked violations
January 24, 2008State Public Notification received29 linked violations
January 7, 2008State Violation/Reminder Notice5 linked violations
January 7, 2008State Public Notification requested4 linked violations
December 12, 2007State Public Notification received2 linked violations
November 27, 2007State Administrative/Compliance Order with penalty issued4 linked violations
June 12, 2007State Public Notification received3 linked violations
June 12, 2007State Public Notification received4 linked violations
May 14, 2007State Administrative/Compliance Order with penalty issued5 linked violations
February 27, 2007State Public Notification received3 linked violations
February 5, 2007State Public Notification requested2 linked violations
January 3, 2007State Public Notification received3 linked violations
August 29, 2006State Public Notification received100 linked violations
January 9, 2006State Public Notification received75 linked violations

Contact

ATOKA CO RWS & SWMD #4

580-889-5715

ATOKA, OK 74525