FREDERICK, OK · Tillman County

FREDERICK 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): OK1011401
System type: Community Water System
Population served: 3,940
Service connections: 2,429
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – October 16, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2023 – December 31, 2023
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2023 – September 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
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
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2018 – June 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2018 – March 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Chlorite
January 1, 2018 – January 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2017 – December 31, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2017 – September 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Chlorite
February 1, 2016 – February 29, 2016
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
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2015 – June 30, 2015
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2015 – March 31, 2015
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2014 – December 31, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2014 – September 30, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2014 – June 30, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2014 – March 31, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2013 – December 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2013 – December 31, 2013
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2013 – November 30, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2013 – November 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2013 – June 30, 2013
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2012 – December 31, 2012
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2012 – December 31, 2012
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2012 – September 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2012 – June 30, 2012
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2012 – June 30, 2012
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
March 1, 2012 – March 31, 2012
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2011 – June 30, 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
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2010 – August 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2010 – September 30, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2010 – September 30, 2010
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2010 – October 22, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2010 – June 30, 2010
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2010 – February 28, 2010
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2010 – February 28, 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
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
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2009 – December 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
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2009 – June 30, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2009 – June 30, 2009
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
February 1, 2009 – April 30, 2009
Resolved
Monitoring, Routine (IDSE)
—
TTHM
February 1, 2009 – April 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2009 – March 31, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2008 – September 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
TTHM
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
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2007 – December 31, 2007
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2007 – August 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2007 – June 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2006 – September 30, 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
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2004 – September 30, 2004
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2004 – September 30, 2004
Resolved

Resolved 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 – October 16, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2023 – September 30, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2023 – June 30, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2023 – March 31, 2023	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2018 – January 31, 2018	Maximum Contaminant Level Violation, Average	Chlorite	Health-based	Resolved
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2017 – September 30, 2017	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
February 1, 2016 – February 29, 2016	Maximum Contaminant Level Violation, Average	Chlorite	Health-based	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
April 1, 2015 – June 30, 2015	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2015 – March 31, 2015	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2014 – December 31, 2014	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2014 – September 30, 2014	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2014 – June 30, 2014	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2014 – March 31, 2014	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2013 – December 31, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2013 – December 31, 2013	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Archived
October 1, 2013 – November 30, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2013 – November 30, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2013 – March 31, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2012 – December 31, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2012 – December 31, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2012 – September 30, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2012 – June 30, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
March 1, 2012 – March 31, 2012	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
October 1, 2011 – December 31, 2011	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	TTHM	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
August 1, 2010 – August 31, 2010	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2010 – September 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2010 – October 22, 2010	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2010 – June 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
February 1, 2010 – February 28, 2010	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
February 1, 2010 – February 28, 2010	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	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 – 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
October 1, 2009 – December 31, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	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
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2009 – June 30, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2009 – June 30, 2009	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
February 1, 2009 – April 30, 2009	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
February 1, 2009 – April 30, 2009	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2009 – March 31, 2009	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2008 – September 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	TTHM	Health-based	Resolved
January 1, 2008 – March 31, 2008	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	TTHM	Health-based	Resolved
August 1, 2007 – August 31, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2007 – June 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2007 – March 31, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2007 – March 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2006 – September 30, 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
July 1, 2004 – September 30, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved

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

Enforcement actions

December 31, 2025State Public Notification received5 linked violations
December 1, 2025State Administrative/Compliance Order without penalty issued6 linked violations
November 24, 2025State Compliance achieved3 linked violations
October 8, 2025State Administrative/Compliance Order without penalty issued3 linked violations
October 16, 2024State Compliance achieved4 linked violations
August 14, 2024State Public Notification received4 linked violations
April 30, 2024State Administrative/Compliance Order with penalty issued8 linked violations
December 11, 2023State Public Notification received3 linked violations
October 27, 2023State Public Notification requested4 linked violations
October 4, 2023State Administrative/Compliance Order without penalty issued4 linked violations
May 30, 2023State Public Notification requested4 linked violations
August 3, 2018State Public Notification requested4 linked violations
July 5, 2018State Compliance achieved3 linked violations
May 7, 2018State Public Notification received5 linked violations
May 3, 2018State Public Notification requested4 linked violations
March 2, 2018State Public Notification received98 linked violations
November 30, 2017State Public Notification received4 linked violations
October 27, 2017State Compliance achieved59 linked violations
January 11, 2017State Compliance achieved5 linked violations
August 12, 2016State Public Notification received5 linked violations
October 20, 2015State Compliance achieved5 linked violations
June 11, 2015State Public Notification requested35 linked violations
March 16, 2015State Administrative/Compliance Order with penalty issued6 linked violations
September 4, 2014State Public Notification received4 linked violations
August 8, 2014State Public Notification requested5 linked violations
July 1, 2014State Public Notification received4 linked violations
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved3 linked violations
May 8, 2014State Compliance achieved1 linked violation
February 4, 2014State Violation/Reminder Notice5 linked violations
February 4, 2014State Violation/Reminder Notice6 linked violations
July 6, 2010State Public Notification requested40 linked violations
June 21, 2010State Administrative/Compliance Order with penalty issued83 linked violations
April 21, 2010State Public Notification requested6 linked violations
March 26, 2010State Administrative/Compliance Order with penalty issued12 linked violations
December 1, 2009State Public Notification received27 linked violations
November 6, 2009State Public Notification requested8 linked violations
June 22, 2009State Public Notification received6 linked violations
May 14, 2009State Public Notification requested2 linked violations
February 24, 2009State Public Notification received3 linked violations
January 29, 2009State Public Notification received25 linked violations
October 30, 2008State Public Notification requested10 linked violations
September 12, 2008State Violation/Reminder Notice6 linked violations
June 5, 2008State Public Notification requested13 linked violations
March 7, 2008State Public Notification received10 linked violations
January 25, 2008State Public Notification received37 linked violations
January 9, 2008State Violation/Reminder Notice25 linked violations
October 31, 2007State Administrative/Compliance Order without penalty issued88 linked violations
October 23, 2007State Public Notification requested6 linked violations
May 30, 2007State Administrative/Compliance Order with penalty issued6 linked violations
October 3, 2006State Public Notification requested5 linked violations
July 19, 1995State Administrative/Compliance Order without penalty issued3 linked violations

Contact

FREDERICK

580-335-7551

FREDERICK, OK 73542