Is OTOE-MISSOURIA TRIBE required to publish a Consumer Confidence Report?

Yes. OTOE-MISSOURIA TRIBE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is OTOE-MISSOURIA TRIBE’s next Consumer Confidence Report due?

OTOE-MISSOURIA TRIBE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

RED ROCK, OK · Noble County

OTOE-MISSOURIA TRIBE Water System

Consumer Confidence Report status

OTOE-MISSOURIA TRIBE must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for OTOE-MISSOURIA TRIBE.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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): OK1021222
System type: Community Water System
Population served: 250
Service connections: 92
Ownership: Native American tribal
Water source: surface water (rivers, lakes, or reservoirs)

OTOE-MISSOURIA TRIBE is one of 1,277 community water systems in Oklahoma in the 500 or fewer people size category, serving 250 people from surface water.

As of August 1, 2026, its federal record holds 119 entries between 2004 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 119, 43 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Stage 1 Disinfectants and Disinfection Byproducts Rule, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Surface Water Treatment Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2022 – September 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2022 – March 31, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2021 – December 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2021 – September 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2021 – June 30, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2021 – March 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2019 – June 30, 2019
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2019 – March 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
Total Haloacetic Acids (HAA5)
October 1, 2018 – December 31, 2018
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2018 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2018 – December 31, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2018 – August 31, 2018
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2018 – August 31, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2018 – September 30, 2018
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2018 – September 30, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2018 – June 30, 2018
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
April 1, 2018 – March 19, 2018
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
April 1, 2018 – March 19, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2018 – June 30, 2018
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2018 – June 30, 2018
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2018 – February 28, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2018 – March 31, 2018
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2017 – December 31, 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
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2017 – March 31, 2017
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2016 – October 31, 2016
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2016 – December 31, 2016
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2016 – August 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2016 – September 30, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2016 – July 31, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – October 18, 2017
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2016 – September 30, 2016
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2016 – February 21, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2016 – June 30, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2016 – May 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2016 – April 30, 2016
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
March 31, 2016 – February 21, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
March 1, 2016 – March 31, 2016
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
January 1, 2016 – January 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2016 – March 31, 2016
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2015 – February 21, 2017
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2015 – December 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2015 – December 31, 2015
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
September 29, 2015 – February 21, 2017
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2015 – February 21, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2015 – September 30, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2015 – October 18, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2015 – September 30, 2015
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2015 – September 30, 2015
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2015 – February 21, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2015 – June 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2015 – March 31, 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
July 1, 2014 – September 30, 2014
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2013 – September 30, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – October 18, 2017
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
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
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
January 1, 2012 – March 31, 2012
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2011 – December 31, 2011
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2011 – March 7, 2012
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
March 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2011 – March 31, 2011
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2010 – September 30, 2010
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2010 – October 26, 2010
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2010 – June 30, 2010
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2010 – May 31, 2010
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2010 – June 30, 2010
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2010 – April 30, 2010
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2010 – February 28, 2010
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
January 1, 2010 – January 31, 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
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2009 – July 31, 2009
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2009 – July 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2009 – April 30, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2009 – January 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Routine (IDSE)
—
TTHM
August 1, 2008 – October 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2008 – August 31, 2008
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2008 – July 31, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2008 – September 30, 2008
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2008 – May 31, 2008
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2008 – February 29, 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
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2007 – December 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2007 – December 31, 2007
Archived
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2007 – September 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2007 – March 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2007 – March 31, 2007
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2007 – March 31, 2007
Archived
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2006 – September 30, 2006
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2006 – June 30, 2006
Archived
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2006 – December 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
April 1, 2005 – June 30, 2005
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2005 – March 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2004 – December 31, 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
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2019 – March 31, 2019	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2018 – December 31, 2018	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
August 1, 2018 – August 31, 2018	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2018 – August 31, 2018	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2018 – September 30, 2018	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2018 – March 19, 2018	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2018 – March 19, 2018	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2018 – June 30, 2018	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
February 1, 2018 – February 28, 2018	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2017 – December 31, 2017	Treatment Technique Precursor Removal	CARBON, TOTAL	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	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2016 – October 31, 2016	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2016 – December 31, 2016	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
September 1, 2016 – September 30, 2016	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
September 1, 2016 – September 30, 2016	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
September 1, 2016 – September 30, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
August 1, 2016 – August 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2016 – July 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2016 – October 18, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2016 – September 30, 2016	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
June 30, 2016 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
June 1, 2016 – June 30, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2016 – May 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2016 – April 30, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
March 31, 2016 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
March 1, 2016 – March 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2016 – January 31, 2016	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
December 30, 2015 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
October 1, 2015 – December 31, 2015	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
September 29, 2015 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
September 29, 2015 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2015 – October 18, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2015 – September 30, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2015 – September 30, 2015	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
June 30, 2015 – February 21, 2017	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	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
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	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	TTHM	Health-based	Resolved
July 1, 2013 – October 18, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2013 – September 30, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
April 1, 2013 – June 30, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2013 – March 31, 2013	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2012 – December 31, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2012 – March 31, 2012	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2011 – March 7, 2012	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
March 1, 2011 – March 31, 2011	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2010 – September 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2010 – October 26, 2010	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
June 1, 2010 – June 30, 2010	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2010 – May 31, 2010	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2010 – June 30, 2010	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
April 1, 2010 – April 30, 2010	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
February 1, 2010 – February 28, 2010	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2010 – January 31, 2010	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	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	Archived
July 1, 2009 – July 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2009 – July 31, 2009	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2009 – April 30, 2009	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2009 – January 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2008 – December 31, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
August 1, 2008 – October 31, 2008	Monitoring, Routine (IDSE)	TTHM	—	Resolved
August 1, 2008 – August 31, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2008 – July 31, 2008	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2008 – September 30, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
May 1, 2008 – May 31, 2008	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
February 1, 2008 – February 29, 2008	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	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	Archived
December 1, 2007 – December 31, 2007	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
October 1, 2007 – December 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2007 – September 30, 2007	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2007 – March 31, 2007	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2007 – March 31, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2007 – March 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
September 1, 2006 – September 30, 2006	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2006 – June 30, 2006	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2006 – March 31, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2005 – June 30, 2005	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved

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

Enforcement actions

June 18, 2025State no longer subject to Rule28 linked violations
June 26, 2023State Public Notification requested66 linked violations
June 10, 2019State Public Notification received33 linked violations
February 19, 2016State Violation/Reminder Notice65 linked violations
July 9, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved1 linked violation
May 8, 2014State Compliance achieved77 linked violations
April 9, 2012State Violation/Reminder Notice20 linked violations
April 9, 2012State Public Notification requested22 linked violations
March 30, 2012State Violation/Reminder Notice105 linked violations
March 1, 2012Federal Compliance achieved2 linked violations
November 1, 2011State Public Notification received117 linked violations
November 16, 2010State Public Notification requested28 linked violations
May 14, 2009State Public Notification requested15 linked violations
May 8, 2009State Violation/Reminder Notice31 linked violations
February 3, 2009State Public Notification received19 linked violations
February 6, 2008State Public Notification requested37 linked violations
January 16, 2008State Public Notification received72 linked violations
January 15, 2008State Public Notification received49 linked violations

Common questions

Is OTOE-MISSOURIA TRIBE required to publish a Consumer Confidence Report?: Yes. OTOE-MISSOURIA TRIBE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is OTOE-MISSOURIA TRIBE’s next Consumer Confidence Report due?: OTOE-MISSOURIA TRIBE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OTOE-MISSOURIA TRIBE have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for OTOE-MISSOURIA TRIBE.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

OTOE-MISSOURIA TRIBE

580-723-4466

RED ROCK, OK 74651