SHAWNEE, OK · Pottawatomie County

SHAWNEE MUNICIPAL 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): OK1020504
System type: Community Water System
Population served: 29,990
Service connections: 13,772
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2025 – December 31, 2025
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
July 1, 2025 – September 30, 2025
Archived
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
January 1, 2025 – March 31, 2025
Archived
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
September 1, 2024 – September 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
September 1, 2024 – September 30, 2024
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
July 1, 2015 – July 31, 2015
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
June 1, 2015 – June 30, 2015
Resolved
Monitoring, Routine (IDSE)
—
TTHM
December 1, 2008 – January 31, 2009
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2008 – September 30, 2008
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2008 – June 30, 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
October 1, 2007 – December 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
Bromate
October 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Bromate
October 1, 2005 – December 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2005 – June 30, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2004 – December 31, 2004
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
October 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2004 – September 30, 2004
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2004 – May 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2004 – June 30, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2004 – March 31, 2004
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2003 – September 30, 2003
Resolved
Treatment Technique Precursor Removal
Health-based
CARBON, TOTAL
April 1, 2003 – June 30, 2003
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2002 – September 30, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2002 – June 30, 2002
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 1998 – December 31, 1998
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – December 31, 2025	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
July 1, 2025 – September 30, 2025	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
January 1, 2025 – March 31, 2025	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Archived
September 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
September 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2015 – July 31, 2015	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
June 1, 2015 – June 30, 2015	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
December 1, 2008 – January 31, 2009	Monitoring, Routine (IDSE)	TTHM	—	Resolved
October 1, 2008 – December 31, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2008 – December 31, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
April 1, 2008 – June 30, 2008	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2007 – December 31, 2007	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
October 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	Bromate	—	Resolved
October 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	Bromate	—	Resolved
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2004 – December 31, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2004 – December 31, 2004	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2004 – September 30, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
May 1, 2004 – May 31, 2004	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
April 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2004 – March 31, 2004	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2003 – September 30, 2003	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2003 – June 30, 2003	Treatment Technique Precursor Removal	CARBON, TOTAL	Health-based	Resolved
July 1, 2002 – September 30, 2002	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2002 – June 30, 2002	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 1998 – December 31, 1998	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved

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

Enforcement actions

December 16, 2025State Public Notification received2 linked violations
November 12, 2025State Public Notification requested3 linked violations
September 17, 2025State Public Notification received2 linked violations
September 4, 2025State Administrative/Compliance Order without penalty issued2 linked violations
September 4, 2025State Public Notification requested1 linked violation
July 1, 2025State Public Notification requested3 linked violations
March 6, 2025State Public Notification requested1 linked violation
December 6, 2024State Compliance achieved3 linked violations
December 6, 2024State Compliance achieved1 linked violation
November 22, 2024State Public Notification requested2 linked violations
November 20, 2020State Public Notification received8 linked violations
September 10, 2020State Administrative/Compliance Order without penalty issued6 linked violations
November 21, 2019State Public Notification requested1 linked violation
November 21, 2019State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 25, 2016State Compliance achieved2 linked violations
July 25, 2016State Compliance achieved31 linked violations
September 23, 2015State Public Notification requested4 linked violations
September 23, 2015State Administrative/Compliance Order with penalty issued2 linked violations
September 5, 2015State Compliance achieved2 linked violations
May 8, 2014State Compliance achieved1 linked violation
June 11, 2009State Violation/Reminder Notice4 linked violations
June 11, 2009State Public Notification requested4 linked violations
April 29, 2009State Public Notification received2 linked violations
January 27, 2009State Public Notification requested3 linked violations
January 6, 2009State Public Notification received4 linked violations
January 1, 2009State Compliance achieved4 linked violations
November 5, 2008State Public Notification requested2 linked violations
March 18, 2008State Administrative/Compliance Order with penalty issued5 linked violations
August 21, 2007State Compliance achieved58 linked violations
April 19, 2006State Administrative/Compliance Order with penalty issued6 linked violations
April 17, 2006State Administrative/Compliance Order with penalty issued3 linked violations
March 6, 2006State Administrative/Compliance Order without penalty issued36 linked violations
December 12, 2005State Public Notification received11 linked violations
November 16, 2005State Public Notification requested14 linked violations
November 16, 2005State Administrative/Compliance Order with penalty issued13 linked violations
March 21, 2005State Public Notification requested4 linked violations
March 21, 2005State Administrative/Compliance Order with penalty issued110 linked violations
November 16, 2004State Public Notification requested4 linked violations
September 7, 2004State Public Notification requested2 linked violations
August 27, 2004State Public Notification requested7 linked violations
June 14, 2004State Public Notification received7 linked violations
March 25, 2004State Public Notification received7 linked violations
March 18, 2004State Administrative/Compliance Order with penalty issued43 linked violations
March 3, 2004State Administrative/Compliance Order with penalty issued5 linked violations
November 24, 2003State Public Notification received5 linked violations
November 13, 2003State Administrative/Compliance Order with penalty issued5 linked violations
September 11, 2003State Public Notification received4 linked violations
January 23, 2003State Administrative/Compliance Order with penalty issued6 linked violations
October 31, 2002State Administrative/Compliance Order with penalty issued2 linked violations
July 10, 2002State Administrative/Compliance Order with penalty issued2 linked violations
November 9, 2001State Compliance achieved2 linked violations
September 18, 2001State Administrative/Compliance Order with penalty issued1 linked violation
April 15, 1999State Administrative/Compliance Order with penalty issued8 linked violations

Contact

SHAWNEE MUNICIPAL AUTHORITY

405-273-1960

SHAWNEE, OK 74801