Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1011101
PWS Name	COMANCHE PUBLIC WORKS AUTHORITY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1649
County Served	Stephens

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
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	256784	Returned to Compliance	01-FEB-2025	28-FEB-2025	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256783	Returned to Compliance	30-DEC-2024	-	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256781	Known	01-APR-2024	30-JUN-2024	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256770	Returned to Compliance	29-SEP-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256755	Known	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256756	Known	01-JUL-2023	30-SEP-2023	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256762	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256761	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256757	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256759	Returned to Compliance	01-JUL-2023	30-SEP-2023	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256747	Known	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256748	Known	01-APR-2023	30-JUN-2023	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	256738	Returned to Compliance	01-FEB-2023	28-FEB-2023	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	256735	Returned to Compliance	01-JAN-2023	31-JAN-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	256734	Returned to Compliance	01-JAN-2023	31-JAN-2023	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256741	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256739	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256740	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256732	Known	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256731	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256733	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256728	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256727	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256726	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256725	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256717	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256716	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256709	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256710	Known	01-OCT-2021	31-DEC-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256705	Known	01-JUL-2021	30-SEP-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256704	Returned to Compliance	01-JUL-2021	30-SEP-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256702	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256696	Returned to Compliance	01-APR-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256703	Known	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256697	Known	01-JAN-2021	31-MAR-2021	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	256699	Known	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256698	Known	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256691	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256692	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256684	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256683	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256677	Known	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256678	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256663	Known	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256662	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256650	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256651	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256637	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256636	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	256635	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes

1 - 50 of 115

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9003689	256637	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256731	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256542	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256550	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256564	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256571	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256575	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256579	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256582	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256593	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256596	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256613	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256615	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256620	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256632	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256633	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256634	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256635	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256636	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256733	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256650	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256651	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256662	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256678	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256683	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256684	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256691	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256692	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256702	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256704	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256709	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256716	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256717	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256725	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256726	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256727	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003689	256728	SOX	State Compliance achieved	11-AUG-2025	State	Stage 2 TTHM & HAA5 MCL & TOC TT/ Closed, system achieved compliance
9003687	256784	SOX	State Compliance achieved	16-MAY-2025	State	-
9003684	256783	SOX	State Compliance achieved	06-MAR-2025	State	-
9003682	256781	SIF	State Public Notification received	26-AUG-2024	State	-
9003675	256759	SIF	State Public Notification received	25-APR-2024	State	-
9003677	256762	SIF	State Public Notification received	25-APR-2024	State	-
9003674	256757	SIF	State Public Notification received	25-APR-2024	State	-
9003678	256761	SIF	State Public Notification received	25-APR-2024	State	-
9003673	256770	SOX	State Compliance achieved	23-FEB-2024	State	-
9003646	256748	SIF	State Public Notification received	28-AUG-2023	State	-
9003646	256747	SIF	State Public Notification received	28-AUG-2023	State	-
9003643	256734	SOX	State Compliance achieved	19-JUL-2023	State	-
9003642	256741	SIF	State Public Notification received	27-JUN-2023	State	-
9003642	256740	SIF	State Public Notification received	27-JUN-2023	State	-

1 - 50 of 114

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
COMANCHE LAKE	25697	Yes	Intake	Surface water	Emergency	Active
WAURIKA LAKE	15699	Yes	Intake	Surface water	Permanent	Active
CLEARWELL AT WATER PLANT	25446	No	Clear Well	-	-	Active
DISTRIBUTION SYSTEM	17225	No	Distribution System/Zone	-	-	Active
HIGHWAY 53 PUMP STATION	30664	No	Pump Facility	-	-	Active
RAW WATER PUMP STATION	30665	No	Pump Facility	-	-	Active
POE01 - WTP	22300	No	Sampling Station	-	-	Active
TOC RAW	23091	No	Sampling Station	-	-	Active
RAW SAMPLE SITE FOR WAURIKA & COMANCHE	29685	No	Sampling Station	-	-	Active
STANDPIPE 1	25444	No	Storage	-	-	Active
STANDPIPE 2	25445	No	Storage	-	-	Active
COMANCHE WTP	10851	No	Treatment Plant	-	-	Active

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
COMANCHE WTP	10851	Gaseous Chlorination, Post	Disinfection
COMANCHE WTP	10851	Coagulation	Particulate removal
COMANCHE WTP	10851	Sedimentation	Particulate removal
COMANCHE WTP	10851	Filtration, Rapid Sand	Particulate removal
COMANCHE WTP	10851	Activated Carbon, Powdered	Taste / odor control

1 - 5 of 5

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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