COPAN, OK · Washington County

COPAN PWA Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 7 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): OK1021417
System type: Community Water System
Population served: 733
Service connections: 357
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2025 – September 30, 2025
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2025 – September 18, 2025
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
June 30, 2025 – September 18, 2025
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2025 – May 31, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2025 – May 31, 2025
Archived
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2025 – May 31, 2025
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
April 1, 2025 – July 10, 2025
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2025 – June 30, 2025
Archived
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
April 1, 2025 – September 18, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
March 29, 2025
Addressed
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Archived
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Archived
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2025 – February 28, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2025 – March 31, 2025
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2024 – September 18, 2025
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
December 30, 2024 – September 18, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
December 21, 2024
Addressed
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2024 – December 31, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
November 1, 2024 – November 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2024 – November 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
November 1, 2024 – November 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
November 1, 2024 – November 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
November 1, 2024 – November 30, 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
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
October 1, 2024 – October 31, 2024
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2024 – September 18, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
Total Haloacetic Acids (HAA5)
September 29, 2024 – September 18, 2025
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
September 29, 2024 – September 18, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
September 5, 2024
Addressed
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
September 1, 2024 – September 30, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2024 – August 31, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2024 – July 31, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Archived
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
June 30, 2024 – September 18, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
June 3, 2024
Addressed
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2024 – May 31, 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
April 1, 2024 – June 30, 2024
Archived
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2024 – April 30, 2024
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
March 10, 2024
Addressed
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
March 1, 2024 – March 31, 2024
Resolved
Failure Submit IDSE/Subpart V Plan Rpt
—
TTHM
December 30, 2023 – September 18, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 18, 2023
Addressed
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2023 – September 30, 2023
Archived
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2023 – June 30, 2023
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2023 – June 30, 2023
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
February 1, 2022 – February 28, 2022
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2006 – January 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2004 – December 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2004 – March 31, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 1998 – August 31, 1998
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1995 – July 31, 1995
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the stateAddressed corrective action reported, pending final confirmation

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
June 30, 2025 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
June 30, 2025 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
May 1, 2025 – May 31, 2025	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
May 1, 2025 – May 31, 2025	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
May 1, 2025 – May 31, 2025	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2025 – July 10, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2025 – April 30, 2025	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
April 1, 2025 – April 30, 2025	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
April 1, 2025 – April 30, 2025	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 2025 – April 30, 2025	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
April 1, 2025 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
March 29, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
March 1, 2025 – March 31, 2025	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
March 1, 2025 – March 31, 2025	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
March 1, 2025 – March 31, 2025	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Archived
February 1, 2025 – February 28, 2025	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
January 1, 2025 – January 31, 2025	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 30, 2024 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
December 30, 2024 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
December 21, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
December 1, 2024 – December 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
November 1, 2024 – November 30, 2024	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	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
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2024 – October 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
October 1, 2024 – September 18, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
September 29, 2024 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Total Haloacetic Acids (HAA5)	—	Resolved
September 29, 2024 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
September 5, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
September 1, 2024 – September 30, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2024 – July 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Archived
June 30, 2024 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
June 3, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
May 1, 2024 – May 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2024 – April 30, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
March 10, 2024	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
March 1, 2024 – March 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 30, 2023 – September 18, 2025	Failure Submit IDSE/Subpart V Plan Rpt	TTHM	—	Resolved
November 18, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Addressed
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
June 1, 2023 – June 30, 2023	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
June 1, 2023 – June 30, 2023	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
February 1, 2022 – February 28, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2006 – January 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2004 – March 31, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 1998 – August 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
July 1, 1995 – July 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the stateAddressed corrective action reported, pending final confirmation

Enforcement actions

December 6, 2025State Public Notification received4 linked violations
December 6, 2025State Public Notification received43 linked violations
December 6, 2025State Public Notification received28 linked violations
September 18, 2025State Compliance achieved9 linked violations
August 20, 2025State Public Notification requested94 linked violations
July 29, 2025State Violation/Reminder Notice4 linked violations
July 16, 2025State Public Notification requested11 linked violations
June 26, 2025State Compliance achieved2 linked violations
June 26, 2025State Compliance achieved4 linked violations
June 26, 2025State Compliance achieved8 linked violations
June 26, 2025State Compliance achieved3 linked violations
May 23, 2025State Public Notification requested8 linked violations
May 6, 2025State Public Notification requested7 linked violations
April 9, 2025State Violation/Reminder Notice3 linked violations
January 29, 2025State Public Notification requested15 linked violations
January 2, 2025State Public Notification requested6 linked violations
January 2, 2025State Violation/Reminder Notice2 linked violations
November 22, 2024State Violation/Reminder Notice3 linked violations
November 22, 2024State Public Notification requested3 linked violations
November 20, 2024State Violation/Reminder Notice6 linked violations
November 20, 2024State Public Notification requested5 linked violations
October 21, 2024State Violation/Reminder Notice7 linked violations
September 26, 2024State Violation/Reminder Notice3 linked violations
August 21, 2024State Public Notification requested7 linked violations
July 17, 2024State Public Notification requested6 linked violations
July 17, 2024State Public Notification requested11 linked violations
June 18, 2024State Public Notification requested3 linked violations
May 15, 2024State Public Notification requested2 linked violations
May 3, 2024State Administrative/Compliance Order without penalty issued46 linked violations
March 15, 2024State Violation/Reminder Notice5 linked violations
November 15, 2023State Administrative/Compliance Order without penalty issued51 linked violations
November 15, 2023State Public Notification requested4 linked violations
October 18, 2023State Public Notification requested4 linked violations
April 20, 2022State Violation/Reminder Notice3 linked violations
August 25, 2021State Public Notification requested4 linked violations
July 28, 2020State Violation/Reminder Notice4 linked violations
November 14, 2019State Public Notification received4 linked violations
November 5, 2019State Public Notification requested3 linked violations
November 3, 2016State Compliance achieved23 linked violations
July 26, 2016State Compliance achieved6 linked violations
July 26, 2016State Compliance achieved10 linked violations
July 26, 2016State Compliance achieved3 linked violations
July 26, 2016State Compliance achieved2 linked violations
June 10, 2016State Violation/Reminder Notice6 linked violations
February 20, 2015State Compliance achieved2 linked violations
July 20, 2009State Compliance achieved15 linked violations
November 13, 2008State Public Notification requested4 linked violations
October 29, 2008State Administrative/Compliance Order with penalty issued14 linked violations
September 25, 2008State Public Notification requested6 linked violations
August 5, 2008State Administrative/Compliance Order with penalty issued7 linked violations
June 23, 2008State Technical Assistance Visit5 linked violations
April 8, 2008State Public Notification received4 linked violations
April 15, 2005State Public Notification requested118 linked violations
April 15, 1999State Administrative/Compliance Order without penalty issued2 linked violations
September 16, 1998State Administrative/Compliance Order without penalty issued2 linked violations
June 1, 1998State Administrative/Compliance Order without penalty issued2 linked violations

Contact

COPAN PWA

918-532-4114

COPAN, OK 74022