Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1010401
PWS Name	ATOKA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	2988
County Served	Atoka

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	Total Haloacetic Acids (HAA5)	279994	Known	01-JUL-2025	30-SEP-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279993	Known	01-JUL-2025	30-SEP-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279988	Known	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279989	Known	01-APR-2025	30-JUN-2025	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279990	Known	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279984	Known	01-JAN-2025	31-MAR-2025	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279978	Returned to Compliance	01-OCT-2024	31-OCT-2024	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	279975	Returned to Compliance	01-AUG-2024	31-AUG-2024	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279959	Known	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279958	Known	01-OCT-2023	31-DEC-2023	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279954	Known	01-JUL-2023	30-SEP-2023	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279950	Known	01-APR-2023	30-JUN-2023	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279948	Returned to Compliance	01-MAR-2023	31-MAR-2023	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279946	Returned to Compliance	01-FEB-2023	28-FEB-2023	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279942	Known	01-JAN-2023	31-MAR-2023	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279937	Returned to Compliance	01-JAN-2023	31-JAN-2023	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279939	Returned to Compliance	01-DEC-2022	31-DEC-2022	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279938	Returned to Compliance	01-DEC-2022	31-DEC-2022	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279934	Known	01-OCT-2022	31-DEC-2022	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279933	Returned to Compliance	01-SEP-2022	30-SEP-2022	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279919	Known	01-JUL-2021	30-SEP-2021	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279914	Returned to Compliance	01-SEP-2020	30-SEP-2020	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279913	Returned to Compliance	01-AUG-2020	31-AUG-2020	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279909	Returned to Compliance	01-JUL-2020	31-JUL-2020	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	279904	Returned to Compliance	01-APR-2020	30-APR-2020	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279903	Returned to Compliance	01-APR-2020	30-APR-2020	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279902	Returned to Compliance	01-MAR-2020	31-MAR-2020	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279910	Known	01-FEB-2020	29-FEB-2020	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	279915	Returned to Compliance	01-JAN-2020	31-DEC-2020	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279886	Returned to Compliance	01-APR-2016	30-APR-2016	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279885	Returned to Compliance	01-MAR-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	279880	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	279877	Returned to Compliance	01-JAN-2015	31-JAN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	279875	Returned to Compliance	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	279873	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	279867	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	279866	Returned to Compliance	01-JUL-2012	-	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279862	Returned to Compliance	01-DEC-2011	31-DEC-2011	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279861	Returned to Compliance	01-NOV-2011	30-NOV-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	279859	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279860	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	279853	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279854	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MRDL	Non-Acute MRDL	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	279855	Returned to Compliance	01-DEC-2009	31-DEC-2009	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine dioxide	279856	Returned to Compliance	01-DEC-2009	31-DEC-2009	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279850	Returned to Compliance	01-OCT-2009	31-DEC-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	279851	Returned to Compliance	01-OCT-2009	31-DEC-2009	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	279848	Returned to Compliance	01-OCT-2009	31-OCT-2009	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	279846	Returned to Compliance	01-JUL-2009	30-SEP-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	279847	Returned to Compliance	01-JUL-2009	30-SEP-2009	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
3113	279993	SIE	State Public Notification requested	25-NOV-2025	State	-
3113	279994	SIE	State Public Notification requested	25-NOV-2025	State	-
3111	279978	SOX	State Compliance achieved	28-AUG-2025	State	OCT2024 Chlorine TT- Closed/ System Achieved Compliance.
3110	279988	SIE	State Public Notification requested	20-AUG-2025	State	-
3110	279989	SIE	State Public Notification requested	20-AUG-2025	State	-
3110	279990	SIE	State Public Notification requested	20-AUG-2025	State	-
3108	279958	SIF	State Public Notification received	26-JUN-2025	State	-
3107	279984	SIF	State Public Notification received	26-JUN-2025	State	-
3108	279959	SIF	State Public Notification received	26-JUN-2025	State	-
3106	279867	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
3100	279975	SIF	State Public Notification received	11-DEC-2024	State	-
3084	279954	SIE	State Public Notification requested	15-NOV-2023	State	-
3082	279946	SIF	State Public Notification received	29-SEP-2023	State	-
3081	279950	SIF	State Public Notification received	11-SEP-2023	State	-
3078	279937	SOX	State Compliance achieved	05-SEP-2023	State	Dec 2022 & Jan 2023 Turbidity & Chlorine/Closed, system achieved compliance.
3080	279948	SOX	State Compliance achieved	05-SEP-2023	State	Mar2023 Turbidity TT/Closed, system achieved compliance.
3078	279939	SOX	State Compliance achieved	05-SEP-2023	State	Dec 2022 & Jan 2023 Turbidity & Chlorine/Closed, system achieved compliance.
3078	279938	SOX	State Compliance achieved	05-SEP-2023	State	Dec 2022 & Jan 2023 Turbidity & Chlorine/Closed, system achieved compliance.
3077	279933	SOX	State Compliance achieved	05-SEP-2023	State	Sept 2022 Turbidity/Closed, system achieved compliance.
3068	279919	SFO	State Administrative/Compliance Order with penalty issued	18-MAY-2023	State	Stage 2 DBP TOC TT, Construction, and Operational Violations.
3068	279934	SFO	State Administrative/Compliance Order with penalty issued	18-MAY-2023	State	Stage 2 DBP TOC TT, Construction, and Operational Violations.
3068	279942	SFO	State Administrative/Compliance Order with penalty issued	18-MAY-2023	State	Stage 2 DBP TOC TT, Construction, and Operational Violations.
3051	279915	SOX	State Compliance achieved	09-SEP-2021	State	-
3049	279903	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3049	279904	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3049	279913	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3049	279914	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3049	279902	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3049	279909	SOX	State Compliance achieved	10-MAR-2021	State	Aug&Sep2020 Chlorine TT; Feb&July2020 Turbidity TT; & March&April2020 95% NTU min EPclosed due to system achieving compliance.
3043	279910	SIF	State Public Notification received	29-SEP-2020	State	-
3030	279886	SOX	State Compliance achieved	11-JAN-2017	State	-
3030	279885	SOX	State Compliance achieved	11-JAN-2017	State	-
3029	64991	SOX	State Compliance achieved	07-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/7/2016 - Violations Should be Closed Out because PWS is in complaince.
3007	279873	SOX	State Compliance achieved	10-NOV-2015	State	-
3008	279875	SOX	State Compliance achieved	10-NOV-2015	State	-
3009	279880	SOX	State Compliance achieved	10-NOV-2015	State	-
3006	279866	SOX	State Compliance achieved	02-JUL-2015	State	CCR RTC
2998	279877	SIF	State Public Notification received	30-MAR-2015	State	-
2986	279862	SOX	State Compliance achieved	11-JUL-2012	State	In compliance - PN Resp to NOV achieved Turbidity treatment technique violations- >5% samples exceeded 0.3 NTU for November December 2011
2986	279861	SOX	State Compliance achieved	11-JUL-2012	State	In compliance - PN Resp to NOV achieved Turbidity treatment technique violations- >5% samples exceeded 0.3 NTU for November December 2011
2979	279856	SOX	State Compliance achieved	15-DEC-2010	State	COMPLINACE ACHIEVED FOR CHLORINE DIOXIDE MONITORING PN RESPONSE TO NOV SUBMITTED
2979	279855	SOX	State Compliance achieved	15-DEC-2010	State	COMPLINACE ACHIEVED FOR CHLORINE DIOXIDE MONITORING PN RESPONSE TO NOV SUBMITTED
2987	279846	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279847	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279850	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279851	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279853	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279854	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279859	SOX	State Compliance achieved	29-OCT-2010	State	-
2987	279860	SOX	State Compliance achieved	29-OCT-2010	State	-

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
ATOKA LAKE INTAKE	15639	Yes	Intake	Surface water	Permanent	Active
MCGEE CREEK RESERVIOIR	27552	Yes	Reservoir	Surface water	Permanent	Inactive
ATOKA LAKE RESERVOIR	27551	Yes	Reservoir	Surface water	Permanent	Inactive
MCGEE CREEK INTAKE	27553	Yes	Intake	Surface water	Permanent	Active
CLEAR WELL	27554	No	Clear Well	-	-	Inactive
DISTRIBUTION SYSTEM	17190	No	Distribution System/Zone	-	-	Active
VIRGINIA BOOSTER PUMP FACILITY	27555	No	Pump Facility	-	-	Active
ATOKA RAW WATER PUMP STATION	30635	No	Pump Facility	-	-	Active
MCGEE RAW WATER PUMP STATION	30636	No	Pump Facility	-	-	Active
VIRGINIA PUMP STATION	30637	No	Pump Facility	-	-	Active
TOC RAW	23056	No	Sampling Station	-	-	Active
POE01 - WTP	22265	No	Sampling Station	-	-	Inactive
TOWER AT WTP	27556	No	Storage	-	-	Active
6TH STREET TOWER	27557	No	Storage	-	-	Active
GREATHOUSE TOWER	27558	No	Storage	-	-	Active
ATOKA WTP NEW	25678	No	Treatment Plant	-	-	Active
ATOKA WTP	10817	No	Treatment Plant	-	-	Inactive

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Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
ATOKA WTP	10817	Coagulation	Particulate removal
ATOKA WTP	10817	Gaseous Chlorination, Post	Disinfection
ATOKA WTP	10817	Filtration, Rapid Sand	Particulate removal
ATOKA WTP	10817	Gaseous Chlorination, Pre	Disinfection
ATOKA WTP	10817	Inhibitor, Hexametaphosphate	Corrosion control
ATOKA WTP NEW	25678	Gaseous Chlorination, Post	Disinfection
ATOKA WTP NEW	25678	Coagulation	Particulate removal
ATOKA WTP NEW	25678	pH Adjustment	Corrosion control
ATOKA WTP NEW	25678	Filtration, Rapid Sand	Particulate removal
ATOKA WTP NEW	25678	Chlorine Dioxide	Disinfection

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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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