Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1020910
PWS Name	OSU WATER PLANT
PWS Type	Community water system
Owner Type	State or Territorial Government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	13000
County Served	Payne

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71976	Returned to Compliance	01-JUL-2025	30-SEP-2025	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71972	Returned to Compliance	30-JUN-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71973	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	71965	Returned to Compliance	01-MAR-2023	31-MAR-2023	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71953	Returned to Compliance	31-MAR-2020	-	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71954	Returned to Compliance	30-DEC-2019	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71946	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71944	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71945	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71943	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71936	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71933	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71932	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71937	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71935	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71934	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71885	Returned to Compliance	01-FEB-2015	30-APR-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	71886	Returned to Compliance	01-FEB-2015	30-APR-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	71882	Returned to Compliance	01-AUG-2014	31-OCT-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71881	Returned to Compliance	01-AUG-2014	31-OCT-2014	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71878	Returned to Compliance	01-JAN-2014	31-MAR-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	71872	Returned to Compliance	01-OCT-2013	31-DEC-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	71867	Returned to Compliance	01-OCT-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	71827	Returned to Compliance	01-NOV-2008	30-NOV-2008	Yes
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	71870	Returned to Compliance	01-OCT-2008	30-NOV-2008	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	16894	Returned to Compliance	01-DEC-1993	31-DEC-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	594	Returned to Compliance	01-OCT-1993	31-OCT-1993	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	30492	Returned to Compliance	01-FEB-1992	29-FEB-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	65991	Returned to Compliance	01-AUG-1991	31-AUG-1991	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	387	Returned to Compliance	01-AUG-1987	31-OCT-1987	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	287	Returned to Compliance	01-MAY-1987	31-JUL-1987	Yes
MCL	Maximum Contaminant Level Violation, Average	Former Total Trihalomethane Rule	TTHM	187	Returned to Compliance	01-FEB-1987	30-APR-1987	Yes

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9133884	71973	SOX	State Compliance achieved	10-DEC-2025	State	2Q2025 TTHM MCL. Closed 12/10/25, system achieved compliance.
9133885	71976	SOX	State Compliance achieved	10-DEC-2025	State	3Q2025 TTHM MCL. Closed 12/10/2025, system achieved compliance.
9133877	71972	SIA	State Violation/Reminder Notice	29-JUL-2025	State	-
9133876	71965	SOX	State Compliance achieved	28-NOV-2023	State	MAR2023 Cl2 TT/Closed, system achieved compliance.
9133874	71945	SO0	State no longer subject to Rule	30-AUG-2023	State	-
9133874	71944	SO0	State no longer subject to Rule	30-AUG-2023	State	-
9133874	71943	SO0	State no longer subject to Rule	30-AUG-2023	State	-
9133874	71946	SO0	State no longer subject to Rule	30-AUG-2023	State	-
9133869	71932	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133869	71933	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133869	71935	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133869	71936	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133869	71937	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133869	71934	SOX	State Compliance achieved	25-MAY-2021	State	3Q2018 -1Q2019, 4Q2019 & 2Q2019 TTHM MCL; closed due to system achieving compliance. Also, closes NOV 19-1.
9133868	71953	SOX	State Compliance achieved	10-NOV-2020	State	OELs recd 11/10/2020
9133868	71954	SOX	State Compliance achieved	10-NOV-2020	State	OELs recd 11/10/2020
9133842	71867	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9133840	594	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9133841	16894	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9133839	30492	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9133838	65991	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9133834	71885	SOX	State Compliance achieved	05-OCT-2015	State	-
9133834	71886	SOX	State Compliance achieved	05-OCT-2015	State	-
9133828	287	SOX	State Compliance achieved	01-APR-2015	State	-
9133828	187	SOX	State Compliance achieved	01-APR-2015	State	-
9133828	387	SOX	State Compliance achieved	01-APR-2015	State	-
9133827	71882	SOX	State Compliance achieved	23-MAR-2015	State	-
9133827	71881	SOX	State Compliance achieved	23-MAR-2015	State	-
9133822	71872	SOX	State Compliance achieved	14-OCT-2014	State	PWS has return to compliance. ERH
9133822	71878	SOX	State Compliance achieved	14-OCT-2014	State	PWS has return to compliance. ERH
#F9133816	71870	SOX	State Compliance achieved	08-MAY-2014	ODSWeb	Entered by EPA Region 6 to address ODS incorrect Validation Error ERR00043 - Y5000 was rejected because the water system does not have a Violation matching the Y5000 ID.
9133805	71827	SIE	State Public Notification requested	20-JAN-2009	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
STILLWATER CONSECUTIVE CONNECTION	24616	Yes	Consecutive Connection	Surface water	Emergency	Active
CARL BLACKWELL	15827	Yes	Intake	Surface water	Permanent	Active
LAKE MCMURTRY	15828	Yes	Intake	Surface water	Emergency	Active
DISTRIBUTION SYSTEM	17301	No	Distribution System/Zone	-	-	Active
POE01 - WTP	21779	No	Sampling Station	-	-	Active
TOC RAW	23173	No	Sampling Station	-	-	Active
RAW WATER SAMPLING STATION	29690	No	Sampling Station	-	-	Active
MCELROY WATER TOWER	27594	No	Storage	-	-	Active
WTP WATER TOWER	27593	No	Storage	-	-	Inactive
OSU WTP	10928	No	Treatment Plant	-	-	Active

1 - 10 of 10

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
OSU WTP	10928	Coagulation	Particulate removal
OSU WTP	10928	Sedimentation	Particulate removal
OSU WTP	10928	Hypochlorination, Post	Disinfection
OSU WTP	10928	Chloramines	Disinfection by-products control
OSU WTP	10928	Filtration, Rapid Sand	Particulate removal
OSU WTP	10928	pH Adjustment	Corrosion control

1 - 6 of 6

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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