HYDRO, OK · Caddo County

HYDRO PWA Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 1 other open item(s). See the violation history below for contaminant and status details.

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): OK2000812
System type: Community Water System
Population served: 1,060
Service connections: 455
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
September 1, 2025 – September 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
August 1, 2025 – August 31, 2025
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
December 20, 2024 – October 8, 2025
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
December 1, 2024 – December 31, 2024
Resolved
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Addressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – July 2, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 20, 2023 – December 29, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2023 – December 29, 2023
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 27, 2023 – December 29, 2023
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
May 21, 2021 – May 6, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2021 – June 30, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
March 18, 2021 – May 6, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2021 – March 31, 2021
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2021 – March 31, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
November 20, 2020 – May 6, 2021
Resolved
Monitoring, Regular
—
2,4-D
October 1, 2020 – December 31, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2020 – March 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2020 – March 31, 2020
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – November 27, 2017
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2016 – August 1, 2019
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – November 27, 2017
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2015 – December 31, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – June 25, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – June 25, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – April 24, 2012
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2007 – March 31, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Styrene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2001 – December 31, 2001
Resolved

Resolved addressed and confirmed by the stateAddressed corrective action reported, pending final confirmation

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2025 – August 31, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
December 20, 2024 – October 8, 2025	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 1, 2024 – December 31, 2024	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Addressed
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Addressed
July 1, 2024 – July 2, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2024 – May 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 20, 2023 – December 29, 2023	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2023 – December 29, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 27, 2023 – December 29, 2023	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
May 21, 2021 – May 6, 2021	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
April 1, 2021 – June 30, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
March 18, 2021 – May 6, 2021	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2021 – March 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2021 – March 31, 2021	Monitoring, Regular	2,4-D	—	Resolved
November 20, 2020 – May 6, 2021	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring, Regular	2,4-D	—	Resolved
March 1, 2020 – March 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2017 – November 27, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2016 – August 1, 2019	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2016 – November 27, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Resolved
January 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Resolved
January 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Resolved
July 1, 2014 – June 25, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2013 – June 25, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2011 – April 24, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2010 – October 31, 2010	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2010 – October 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2007 – March 31, 2007	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Benzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved

Resolved addressed and confirmed by the stateAddressed corrective action reported, pending final confirmation

Enforcement actions

November 24, 2025State Compliance achieved1 linked violation
November 21, 2025State Public Notification requested2 linked violations
November 21, 2025State Violation/Reminder Notice2 linked violations
October 28, 2025State Compliance achieved1 linked violation
October 15, 2025State Violation/Reminder Notice1 linked violation
October 15, 2025State Public Notification requested1 linked violation
October 8, 2025State Compliance achieved1 linked violation
October 8, 2025State Compliance achieved1 linked violation
September 16, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 16, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 11, 2025State Violation/Reminder Notice1 linked violation
July 11, 2025State Violation/Reminder Notice1 linked violation
March 26, 2025State Compliance achieved1 linked violation
March 6, 2025State Public Notification requested2 linked violations
March 6, 2025State Violation/Reminder Notice2 linked violations
November 22, 2024State Public Notification requested1 linked violation
November 22, 2024State Violation/Reminder Notice1 linked violation
July 26, 2024State Compliance achieved1 linked violation
July 26, 2024State Compliance achieved1 linked violation
July 17, 2024State Public Notification requested1 linked violation
July 17, 2024State Public Notification requested1 linked violation
July 17, 2024State Violation/Reminder Notice1 linked violation
July 17, 2024State Violation/Reminder Notice1 linked violation
July 12, 2024State Violation/Reminder Notice1 linked violation
July 2, 2024State Compliance achieved1 linked violation
December 29, 2023State Compliance achieved3 linked violations
December 15, 2023State Public Notification requested1 linked violation
December 15, 2023State Public Notification requested1 linked violation
December 15, 2023State Violation/Reminder Notice1 linked violation
December 15, 2023State Violation/Reminder Notice1 linked violation
September 22, 2023State Violation/Reminder Notice1 linked violation
September 22, 2023State Public Notification requested1 linked violation
September 7, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received1 linked violation
April 4, 2023State Public Notification received3 linked violations
April 4, 2023State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
April 4, 2023State Public Notification received40 linked violations
April 4, 2023State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 7, 2022State Compliance achieved1 linked violation
August 2, 2022State Compliance achieved2 linked violations
June 29, 2022State Violation/Reminder Notice1 linked violation
June 29, 2022State Public Notification requested1 linked violation
May 14, 2022State Public Notification received1 linked violation
May 14, 2022State Public Notification received1 linked violation
May 14, 2022State Public Notification received1 linked violation
April 16, 2022State Public Notification received1 linked violation
March 14, 2022State Compliance achieved1 linked violation
March 1, 2022State Violation/Reminder Notice1 linked violation
March 1, 2022State Public Notification requested1 linked violation
February 12, 2022State Public Notification received1 linked violation
January 15, 2022State Public Notification received1 linked violation
November 24, 2021State Compliance achieved1 linked violation
October 20, 2021State Violation/Reminder Notice1 linked violation
October 20, 2021State Public Notification requested1 linked violation
August 13, 2021State Violation/Reminder Notice1 linked violation
August 13, 2021State Violation/Reminder Notice1 linked violation
August 13, 2021State Public Notification requested1 linked violation
August 13, 2021State Public Notification requested1 linked violation
July 15, 2021State Public Notification requested1 linked violation
July 15, 2021State Violation/Reminder Notice1 linked violation
July 15, 2021State Public Notification requested1 linked violation
July 15, 2021State Violation/Reminder Notice1 linked violation
June 17, 2021State Public Notification received1 linked violation
June 17, 2021State Public Notification received1 linked violation
May 14, 2021State Violation/Reminder Notice1 linked violation
May 14, 2021State Violation/Reminder Notice1 linked violation
May 14, 2021State Public Notification requested1 linked violation
May 14, 2021State Violation/Reminder Notice1 linked violation
May 14, 2021State Public Notification requested1 linked violation
May 14, 2021State Public Notification requested1 linked violation
May 6, 2021State Compliance achieved8 linked violations
April 16, 2021State Public Notification requested1 linked violation
April 16, 2021State Violation/Reminder Notice1 linked violation
February 12, 2021State Public Notification requested1 linked violation
February 12, 2021State Violation/Reminder Notice1 linked violation
January 15, 2021State Violation/Reminder Notice1 linked violation
January 15, 2021State Public Notification requested1 linked violation
June 17, 2020State Public Notification requested1 linked violation
June 17, 2020State Violation/Reminder Notice1 linked violation
June 17, 2020State Violation/Reminder Notice1 linked violation
June 17, 2020State Public Notification requested1 linked violation
April 8, 2020State Compliance achieved1 linked violation
April 8, 2020State Compliance achieved1 linked violation
October 18, 2019State Public Notification received1 linked violation
August 1, 2019State Compliance achieved1 linked violation
December 6, 2017State Compliance achieved1 linked violation
December 6, 2017State Compliance achieved2 linked violations
November 27, 2017State Compliance achieved1 linked violation
November 27, 2017State Compliance achieved1 linked violation
November 17, 2017State Violation/Reminder Notice1 linked violation
April 20, 2017State Violation/Reminder Notice1 linked violation
April 20, 2017State Public Notification requested1 linked violation
January 3, 2017State Violation/Reminder Notice1 linked violation
September 24, 2016State Public Notification received1 linked violation
September 14, 2016State Public Notification received2 linked violations
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 14, 2016State Public Notification requested2 linked violations
July 14, 2016State Administrative/Compliance Order with penalty issued2 linked violations
September 24, 2015State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 23, 2015State Administrative/Compliance Order with penalty issued1 linked violation
September 23, 2015State Public Notification requested1 linked violation
June 25, 2015State Compliance achieved2 linked violations
January 14, 2015State Violation/Reminder Notice1 linked violation
April 24, 2012State Compliance achieved1 linked violation
February 4, 2011State Public Notification received1 linked violation
January 11, 2011State Public Notification requested1 linked violation
January 11, 2011State Violation/Reminder Notice1 linked violation
January 11, 2011State Public Notification requested1 linked violation
January 11, 2011State Violation/Reminder Notice1 linked violation
October 31, 2010State Compliance achieved2 linked violations
September 24, 2009State Compliance achieved1 linked violation
August 3, 2007State Public Notification received1 linked violation
July 24, 2007State Administrative/Compliance Order with penalty issued2 linked violations
July 24, 2007State Public Notification requested1 linked violation
September 9, 2003State Public Notification received1 linked violation
August 25, 2003State Administrative/Compliance Order with penalty issued1 linked violation
August 25, 2003State Public Notification requested3 linked violations
July 9, 2002State Administrative/Compliance Order with penalty issued1 linked violation
June 6, 2002State Public Notification received1 linked violation
May 24, 2002State Public Notification requested1 linked violation
March 28, 2002State Compliance achieved20 linked violations
February 8, 2002State Administrative/Compliance Order with penalty issued20 linked violations
November 11, 1994State Compliance achieved1 linked violation

Contact

HYDRO PWA

405-663-2531

HYDRO, OK 73048