RALSTON, OK · Pawnee County

RALSTON 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): OK2005901
System type: Community Water System
Population served: 335
Service connections: 141
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Endrin
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
2,4-D
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Atrazine
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
OXAMYL
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Glyphosate
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2023 – December 31, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 16, 2021 – January 6, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 16, 2021 – January 6, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 21, 2020 – January 6, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
September 26, 2020 – January 6, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2020 – June 30, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
November 1, 2019 – November 30, 2019
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2019 – December 31, 2019
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2019 – September 28, 2022
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2019 – December 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2018 – September 30, 2018
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2018 – June 30, 2018
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2017 – October 31, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2015 – April 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2014 – October 31, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – April 29, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2014 – July 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2014 – June 30, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – April 29, 2015
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2013 – September 27, 2016
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2013 – December 31, 2013
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2012 – September 27, 2016
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2012 – July 31, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – April 29, 2015
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2010 – August 31, 2010
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2010 – May 26, 2011
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 1, 2010 – July 31, 2010
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2010 – December 31, 2012
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2010 – December 31, 2012
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
January 1, 2010 – January 31, 2010
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2009 – May 26, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2009 – October 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1995 – May 31, 1995
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
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endrin	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4-D	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Atrazine	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	OXAMYL	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Glyphosate	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 16, 2021 – January 6, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 16, 2021 – January 6, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 21, 2020 – January 6, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
September 26, 2020 – January 6, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2020 – June 30, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2019 – November 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2019 – December 31, 2019	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2019 – September 28, 2022	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
July 1, 2018 – September 30, 2018	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2018 – June 30, 2018	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2017 – October 31, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2015 – April 30, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2014 – October 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2014 – April 29, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2014 – July 31, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2014 – June 30, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2013 – April 29, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2013 – September 27, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2013 – December 31, 2013	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
October 1, 2012 – September 27, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2012 – July 31, 2012	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – October 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2011 – October 31, 2011	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2011 – April 29, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Arsenic	—	Resolved
August 1, 2010 – August 31, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2010 – May 26, 2011	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2010 – July 31, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2010 – December 31, 2012	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2010 – December 31, 2012	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2010 – January 31, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2009 – May 26, 2011	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2009 – October 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
May 1, 1995 – May 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	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

November 21, 2025State Public Notification requested29 linked violations
November 21, 2025State Violation/Reminder Notice29 linked violations
December 17, 2024State Compliance achieved1 linked violation
May 1, 2024State Public Notification received1 linked violation
February 28, 2024State Violation/Reminder Notice1 linked violation
February 28, 2024State Public Notification requested1 linked violation
January 6, 2023State Compliance achieved1 linked violation
January 6, 2023State Compliance achieved1 linked violation
January 6, 2023State Compliance achieved1 linked violation
January 6, 2023State Compliance achieved1 linked violation
January 6, 2023State Compliance achieved1 linked violation
January 6, 2023State Compliance achieved1 linked violation
November 28, 2022State Compliance achieved1 linked violation
November 22, 2022State Intentional no-action1 linked violation
September 28, 2022State Compliance achieved1 linked violation
July 28, 2021State Public Notification received1 linked violation
May 20, 2021State Administrative/Compliance Order without penalty issued8 linked violations
May 20, 2021State Public Notification requested1 linked violation
March 6, 2021State Public Notification received1 linked violation
March 6, 2021State Public Notification received1 linked violation
January 15, 2021State Public Notification received1 linked violation
January 15, 2021State Public Notification received1 linked violation
December 9, 2020State Compliance achieved5 linked violations
November 20, 2020State Public Notification received1 linked violation
September 25, 2020State Public Notification received1 linked violation
July 28, 2020State Violation/Reminder Notice1 linked violation
July 28, 2020State Public Notification requested1 linked violation
March 6, 2020State Violation/Reminder Notice1 linked violation
March 6, 2020State Public Notification requested1 linked violation
March 6, 2020State Violation/Reminder Notice1 linked violation
March 6, 2020State Public Notification requested1 linked violation
January 16, 2020State Public Notification requested1 linked violation
January 16, 2020State Violation/Reminder Notice1 linked violation
January 16, 2020State Public Notification requested1 linked violation
January 16, 2020State Violation/Reminder Notice1 linked violation
November 21, 2019State Public Notification requested1 linked violation
November 21, 2019State Violation/Reminder Notice1 linked violation
October 2, 2019State Public Notification received1 linked violation
October 2, 2019State Public Notification received1 linked violation
September 26, 2019State Violation/Reminder Notice1 linked violation
September 26, 2019State Public Notification requested1 linked violation
October 19, 2018State Compliance achieved4 linked violations
September 14, 2018State Public Notification requested1 linked violation
September 14, 2018State Violation/Reminder Notice1 linked violation
July 16, 2018State Public Notification requested1 linked violation
July 16, 2018State Violation/Reminder Notice1 linked violation
March 27, 2018State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 27, 2018State Public Notification received1 linked violation
March 27, 2018State Public Notification received1 linked violation
January 12, 2018State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 14, 2017State Violation/Reminder Notice1 linked violation
December 14, 2017State Public Notification requested1 linked violation
December 14, 2017State Violation/Reminder Notice1 linked violation
December 14, 2017State Public Notification requested1 linked violation
September 27, 2016State Compliance achieved2 linked violations
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
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
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
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
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 achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved8 linked violations
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 29, 2015State Public Notification received1 linked violation
May 22, 2015State Violation/Reminder Notice1 linked violation
May 22, 2015State Public Notification requested1 linked violation
April 30, 2015State Compliance achieved1 linked violation
April 30, 2015State Compliance achieved1 linked violation
April 29, 2015State Compliance achieved3 linked violations
February 24, 2015State Compliance achieved1 linked violation
January 14, 2015State Violation/Reminder Notice1 linked violation
December 11, 2014State Compliance achieved1 linked violation
December 4, 2014State Public Notification requested1 linked violation
December 4, 2014State Violation/Reminder Notice1 linked violation
October 31, 2014State Compliance achieved1 linked violation
August 29, 2014State Violation/Reminder Notice1 linked violation
August 29, 2014State Public Notification requested1 linked violation
August 13, 2014State Violation/Reminder Notice1 linked violation
August 13, 2014State Public Notification requested1 linked violation
July 31, 2014State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 31, 2014State Compliance achieved1 linked violation
June 30, 2014State Compliance achieved1 linked violation
June 30, 2014State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 10, 2014State Violation/Reminder Notice1 linked violation
March 10, 2014State Public Notification requested1 linked violation
February 14, 2014State Public Notification requested1 linked violation
February 14, 2014State Violation/Reminder Notice1 linked violation
July 31, 2012State Compliance achieved1 linked violation
July 2, 2012Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 11, 2012State Compliance achieved3 linked violations
December 22, 2011State Public Notification requested1 linked violation
December 22, 2011State Violation/Reminder Notice1 linked violation
November 17, 2011State Public Notification requested1 linked violation
November 17, 2011State Violation/Reminder Notice1 linked violation
November 17, 2011State Public Notification requested1 linked violation
November 17, 2011State Violation/Reminder Notice1 linked violation
May 26, 2011State Compliance achieved3 linked violations
February 15, 2011State Public Notification requested1 linked violation
February 15, 2011State Violation/Reminder Notice1 linked violation
September 30, 2010Federal Compliance achieved3 linked violations
September 10, 2010State Public Notification requested1 linked violation
September 10, 2010State Violation/Reminder Notice1 linked violation
March 28, 2010State Compliance achieved1 linked violation
February 5, 2010State Public Notification received1 linked violation
January 27, 2010State Public Notification requested1 linked violation
January 27, 2010State Violation/Reminder Notice1 linked violation
December 14, 2009State Public Notification requested1 linked violation
December 14, 2009State Violation/Reminder Notice1 linked violation
December 13, 2007State Public Notification received1 linked violation
December 12, 2007State Public Notification received1 linked violation
December 12, 2007State Compliance achieved1 linked violation
November 20, 2007State Public Notification requested2 linked violations
November 20, 2007State Violation/Reminder Notice3 linked violations
July 28, 2006State Compliance achieved2 linked violations
July 28, 2006State Public Notification received2 linked violations
July 28, 2006State Public Notification received5 linked violations
July 28, 2006State Compliance achieved1 linked violation
July 28, 2006State Compliance achieved1 linked violation
April 7, 2006State Public Notification requested2 linked violations
April 7, 2006State Administrative/Compliance Order with penalty issued3 linked violations
January 1, 2006State Compliance achieved4 linked violations
October 20, 2005State Public Notification requested2 linked violations
September 7, 2005State Administrative/Compliance Order with penalty issued5 linked violations
September 7, 2005State Public Notification requested25 linked violations
August 15, 2005State Public Notification requested1 linked violation
July 18, 2005State Compliance achieved6 linked violations
July 18, 2005State Public Notification received2 linked violations
May 16, 2005State Public Notification requested3 linked violations
October 6, 2003State Public Notification requested1 linked violation
October 6, 2003State Violation/Reminder Notice1 linked violation
October 20, 1995State Compliance achieved4 linked violations
April 23, 1991State Compliance achievedgeneral compliance action — not tied to a specific violation on record

Contact

RALSTON

918-738-4211

RALSTON, OK 74650