Is EL RENO required to publish a Consumer Confidence Report?

Yes. EL RENO 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 EL RENO’s next Consumer Confidence Report due?

EL RENO’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.

EL RENO, OK · Canadian County

EL RENO Water System

Consumer Confidence Report status

EL RENO 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 EL RENO.

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): OK2000902
System type: Community Water System
Population served: 16,212
Service connections: 6,093
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

EL RENO is one of 56 community water systems in Oklahoma in the 10,001 to 100,000 people size category, serving 16,212 people from surface water.

As of August 1, 2026, its federal record holds 48 entries between 1998 and 2024, all of which EPA lists as closed.

Of the 48, 35 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 volatile organic chemicals, inorganic chemicals, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – September 30, 2025
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2021 – May 31, 2021
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2021 – February 28, 2021
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2020 – October 31, 2020
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Nickel
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Mercury
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Chromium
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Barium
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Selenium
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2015 – September 30, 2015
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2014 – June 30, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2014 – March 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
December 1, 2013 – February 28, 2014
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
December 1, 2013 – February 28, 2014
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2008 – November 30, 2008
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2008 – November 30, 2008
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
December 1, 2007 – January 31, 2008
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
October 1, 2007 – November 30, 2007
Resolved
Monitoring, Routine (IDSE)
—
TTHM
October 1, 2007 – November 30, 2007
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2006 – March 31, 2006
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2003 – December 31, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2003 – September 30, 2003
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2001 – June 30, 2001
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2001 – January 31, 2001
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1998 – June 30, 1998
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 – September 30, 2025	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
May 1, 2021 – May 31, 2021	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 2021 – February 28, 2021	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
October 1, 2020 – October 31, 2020	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2019 – September 30, 2019	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Nickel	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Mercury	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Chromium	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Barium	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Selenium	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2016 – December 31, 2016	Monitoring, Regular	Antimony, Total	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2014 – June 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
December 1, 2013 – February 28, 2014	Monitoring and Reporting (DBP)	TTHM	—	Archived
December 1, 2013 – February 28, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
October 1, 2013 – December 31, 2013	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
November 1, 2011 – November 30, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2010 – August 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2008 – November 30, 2008	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2008 – November 30, 2008	Monitoring, Routine (IDSE)	TTHM	—	Resolved
December 1, 2007 – January 31, 2008	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2007 – November 30, 2007	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2007 – November 30, 2007	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2006 – March 31, 2006	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Archived
October 1, 2003 – December 31, 2003	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2003 – September 30, 2003	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
June 1, 2001 – June 30, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2001 – January 31, 2001	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 1998 – June 30, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	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

September 30, 2025State Compliance achieved3 linked violations
July 11, 2025State Violation/Reminder Notice2 linked violations
October 9, 2024State Administrative/Compliance Order without penalty issued2 linked violations
April 6, 2023State Compliance achieved2 linked violations
April 4, 2023State Public Notification received2 linked violations
March 24, 2023State Public Notification received3 linked violations
March 20, 2023State Compliance achieved4 linked violations
March 20, 2023State Compliance achieved5 linked violations
March 3, 2023State Administrative/Compliance Order without penalty issued1 linked violation
March 3, 2023State Public Notification requested1 linked violation
February 14, 2023State Public Notification requested5 linked violations
August 4, 2022State Public Notification received5 linked violations
March 15, 2022State Public Notification received5 linked violations
January 12, 2022State Public Notification requested3 linked violations
January 12, 2022State Administrative/Compliance Order without penalty issued3 linked violations
April 2, 2021State Public Notification requested3 linked violations
January 21, 2021State Public Notification requested3 linked violations
November 21, 2019State Violation/Reminder Notice2 linked violations
October 1, 2019State Compliance achieved2 linked violations
June 26, 2017State Public Notification received11 linked violations
August 4, 2016State Compliance achieved4 linked violations
August 4, 2016State Compliance achieved3 linked violations
December 9, 2015State Public Notification requested24 linked violations
May 22, 2015State Compliance achieved5 linked violations
May 22, 2015State Compliance achieved2 linked violations
February 20, 2015State Compliance achieved6 linked violations
December 17, 2014State Public Notification received3 linked violations
June 20, 2014State Public Notification requested4 linked violations
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
November 12, 2010State Public Notification requested2 linked violations
January 19, 2009Federal Compliance achieved3 linked violations
December 5, 2008Federal Violation/Reminder Notice4 linked violations
December 5, 2008Federal Violation/Reminder Notice4 linked violations
September 19, 2008State Compliance achieved18 linked violations
June 9, 2008State Administrative/Compliance Order with penalty issued2 linked violations
October 3, 2006State Public Notification requested1 linked violation
October 3, 2006State Administrative/Compliance Order with penalty issued1 linked violation
August 25, 2006State Public Notification received2 linked violations
August 10, 2006State Administrative/Compliance Order with penalty issued2 linked violations
February 24, 2006State Public Notification received2 linked violations
January 25, 2006State Public Notification requested1 linked violation
January 25, 2006State Administrative/Compliance Order with penalty issued1 linked violation
July 1, 2005State Compliance achieved14 linked violations
December 28, 2004State Public Notification received5 linked violations
November 16, 2004State Administrative/Compliance Order with penalty issued2 linked violations
March 10, 2004State Administrative/Compliance Order without penalty issued1 linked violation
February 23, 2004State Administrative/Compliance Order with penalty issued1 linked violation
November 20, 2003State Public Notification received3 linked violations
September 1, 2003State Compliance achieved22 linked violations
August 28, 2003State Public Notification requested2 linked violations
August 8, 2003State Violation/Reminder Notice1 linked violation
February 4, 2003State Administrative/Compliance Order with penalty issued1 linked violation
December 30, 2002State Administrative/Compliance Order with penalty issued1 linked violation
December 7, 1999State Administrative/Compliance Order with penalty issued2 linked violations

Common questions

Is EL RENO required to publish a Consumer Confidence Report?: Yes. EL RENO 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 EL RENO’s next Consumer Confidence Report due?: EL RENO’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does EL RENO have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for EL RENO.
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

EL RENO

405-262-3620

EL RENO, OK 73036