LENAPAH, OK · Nowata County

LENAPAH PUBLIC WORKS 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): OK1021501
System type: Community Water System
Population served: 298
Service connections: 145
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2023 – June 30, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2023 – March 31, 2023
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2019 – August 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2015 – September 30, 2015
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2015 – September 2, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – July 27, 2016
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2013 – April 28, 2015
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2013 – December 31, 2013
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2013 – June 30, 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
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – October 8, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2012 – June 30, 2012
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
October 1, 2009 – December 31, 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, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
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
TTHM
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2005 – December 31, 2007
Archived
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2004 – March 31, 2004
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 1998 – June 30, 1998
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 1996 – August 31, 1996
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1993 – December 31, 1993
Archived

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
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
August 1, 2019 – August 31, 2019	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
June 30, 2015 – September 2, 2015	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
July 1, 2014 – July 27, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2013 – April 28, 2015	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2013 – December 31, 2013	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Atrazine	—	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
July 1, 2012 – October 8, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	TTHM	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
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	TTHM	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	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2007 – December 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Atrazine	—	Archived
January 1, 2004 – March 31, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
June 1, 1998 – June 30, 1998	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1996 – August 31, 1996	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 1993 – December 31, 1993	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived

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

Enforcement actions

September 10, 2025State Compliance achieved6 linked violations
June 26, 2025State Compliance achieved1 linked violation
March 6, 2025State Public Notification requested2 linked violations
February 16, 2024State Violation/Reminder Notice3 linked violations
November 15, 2023State Public Notification requested4 linked violations
August 21, 2023State Public Notification requested3 linked violations
April 26, 2023State Public Notification requested3 linked violations
February 3, 2023State Public Notification requested3 linked violations
July 14, 2021State Compliance achieved10 linked violations
March 1, 2021State Compliance achieved6 linked violations
June 17, 2020State Public Notification requested3 linked violations
March 6, 2020State Violation/Reminder Notice3 linked violations
March 6, 2020State Public Notification requested1 linked violation
February 12, 2020State Administrative/Compliance Order without penalty issued4 linked violations
February 12, 2020State Public Notification requested3 linked violations
April 1, 2019State Administrative/Compliance Order without penalty issued5 linked violations
December 14, 2018State Violation/Reminder Notice5 linked violations
December 14, 2018State Public Notification requested4 linked violations
December 4, 2018State Public Notification requested5 linked violations
November 19, 2018State Public Notification received3 linked violations
November 6, 2018State Public Notification requested3 linked violations
April 23, 2018State Administrative/Compliance Order without penalty issued7 linked violations
March 5, 2018State Public Notification received4 linked violations
July 26, 2016State Compliance achieved4 linked violations
July 26, 2016State Compliance achieved6 linked violations
July 26, 2016State Compliance achieved6 linked violations
July 26, 2016State Compliance achieved4 linked violations
March 11, 2016State Administrative/Compliance Order with penalty issued5 linked violations
February 19, 2016State Violation/Reminder Notice4 linked violations
August 24, 2015State Violation/Reminder Notice4 linked violations
January 6, 2015State no longer subject to Rule7 linked violations
November 1, 2013State Public Notification requested4 linked violations
April 3, 2013State Public Notification requested9 linked violations
November 19, 2012State Public Notification received5 linked violations
October 12, 2012State Administrative/Compliance Order with penalty issued4 linked violations
August 1, 2012State Administrative/Compliance Order with penalty issued5 linked violations
June 7, 2012State Technical Assistance Visit8 linked violations
June 16, 2009State Administrative/Compliance Order with penalty issued58 linked violations
February 10, 2009State Site Visit for enforcement purposes48 linked violations
January 14, 2009State Public Notification requested4 linked violations
December 3, 2008State Public Notification received27 linked violations
May 16, 2007State Public Notification requested5 linked violations
October 3, 2006State Administrative/Compliance Order with penalty issued12 linked violations
August 26, 1996State Compliance achieved2 linked violations
August 13, 1993State Compliance achieved5 linked violations
August 3, 1993State Boil Water Order6 linked violations

Contact

LENAPAH PUBLIC WORKS AUTHORITY

918-468-2226

LENAPAH, OK 74042-0130