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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1021713
PWS Name	EAST CENTRAL OKLAHOMA WATER AUTHORITY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1200
County Served	Sequoyah

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
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	295546	Returned to Compliance	01-OCT-2021	31-OCT-2021	Yes
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	295571	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	295555	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	295556	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	295557	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	295558	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	295559	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	295554	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	295574	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	295573	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	295572	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	295560	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	295570	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	295569	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	295568	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	295567	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	295566	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	295565	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	295564	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	295563	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	295562	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	295561	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295537	Returned to Compliance	01-NOV-2018	30-NOV-2018	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295536	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295529	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295530	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295523	Known	01-JAN-2017	31-MAR-2017	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295498	Known	01-OCT-2016	31-DEC-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295483	Known	01-SEP-2016	30-SEP-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295482	Known	01-AUG-2016	31-AUG-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295481	Known	01-JUL-2016	31-JUL-2016	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295496	Known	01-JUL-2016	30-SEP-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295512	Known	01-APR-2016	30-APR-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295510	Known	01-MAR-2016	31-MAR-2016	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295473	Returned to Compliance	01-FEB-2016	29-FEB-2016	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295474	Returned to Compliance	01-JAN-2016	31-JAN-2016	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295475	Known	01-JAN-2016	31-MAR-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295517	Returned to Compliance	01-NOV-2015	31-OCT-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295518	Returned to Compliance	01-NOV-2015	31-OCT-2016	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295593	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295508	Known	01-JAN-2015	31-MAR-2015	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	295431	Returned to Compliance	01-DEC-2010	31-DEC-2010	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295428	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295427	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295594	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295430	Returned to Compliance	01-JAN-2009	31-MAR-2009	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295425	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295424	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295595	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295433	Returned to Compliance	01-SEP-2008	30-NOV-2008	No

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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
9190374	295595	SOX	State Compliance achieved	20-JUN-2025	State	-
9190374	295594	SOX	State Compliance achieved	20-JUN-2025	State	-
9190374	295593	SOX	State Compliance achieved	20-JUN-2025	State	-
9190374	295596	SOX	State Compliance achieved	20-JUN-2025	State	-
9190373	295546	SOX	State Compliance achieved	08-AUG-2024	State	OCT2021 Cl2 EP/Closed, system achieved compliance.
9190372	295560	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295574	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295573	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295572	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295571	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295570	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295569	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295568	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295567	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295566	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295565	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295564	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295563	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295554	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295555	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295556	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295557	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295558	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295559	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295561	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190372	295562	SOX	State Compliance achieved	10-APR-2023	State	System sampled
9190360	295537	SOX	State Compliance achieved	11-OCT-2019	State	-
9190357	295530	SOX	State Compliance achieved	23-MAY-2018	State	Closed out TURBIDTY JAN2016 and FEB2016 along with TOC Removal 1Q2017 and 2Q2017.
9190357	295473	SOX	State Compliance achieved	23-MAY-2018	State	Closed out TURBIDTY JAN2016 and FEB2016 along with TOC Removal 1Q2017 and 2Q2017.
9190357	295474	SOX	State Compliance achieved	23-MAY-2018	State	Closed out TURBIDTY JAN2016 and FEB2016 along with TOC Removal 1Q2017 and 2Q2017.
9190357	295529	SOX	State Compliance achieved	23-MAY-2018	State	Closed out TURBIDTY JAN2016 and FEB2016 along with TOC Removal 1Q2017 and 2Q2017.
9190356	295536	SOX	State Compliance achieved	31-DEC-2017	State	System is back in compliance with TOC Removal
9190337	295523	SIE	State Public Notification requested	17-JUL-2017	State	-
9190345	295483	SIF	State Public Notification received	12-JUL-2017	State	-
9190316	295517	SIF	State Public Notification received	12-JUL-2017	State	-
9190316	295518	SIF	State Public Notification received	12-JUL-2017	State	-
9190344	295482	SIF	State Public Notification received	12-JUL-2017	State	-
9190320	295496	SIF	State Public Notification received	12-JUL-2017	State	-
9190343	295481	SIF	State Public Notification received	12-JUL-2017	State	-
9190284	295498	SIE	State Public Notification requested	20-APR-2017	State	-
9190258	52696	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.
9190261	47798	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.
9190260	41997	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.
9190259	57496	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.
#F9190246	295433	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.
9190245	295431	SIF	State Public Notification received	04-APR-2011	State	-
9190242	295430	SOX	State Compliance achieved	18-MAY-2010	State	IN COMPLIANCE TOC MONITORING FEB 2009 PN COMPLETE
9190238	294805	SOX	State Compliance achieved	14-AUG-2009	State	HAA5 MCL, TTHM MCL TOT TREATMENT TECHNIQUE IN COMPLINACE AS OF 2Q2009 PN RESPONSE TO NOV ACHIEVED.
9190238	295428	SOX	State Compliance achieved	14-AUG-2009	State	HAA5 MCL, TTHM MCL TOT TREATMENT TECHNIQUE IN COMPLINACE AS OF 2Q2009 PN RESPONSE TO NOV ACHIEVED.
9190238	295427	SOX	State Compliance achieved	14-AUG-2009	State	HAA5 MCL, TTHM MCL TOT TREATMENT TECHNIQUE IN COMPLINACE AS OF 2Q2009 PN RESPONSE TO NOV ACHIEVED.

1 - 50 of 88

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
GORE PWA (EMERGENCY)	29353	Yes	Consecutive Connection	Surface water	Emergency	Active
TENKILLER LAKE	15961	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	17378	No	Distribution System/Zone	-	-	Active
SRS PUMP FACILITY	27250	No	Pump Facility	-	-	Active
OVERLOOK PUMP FACILITY	27251	No	Pump Facility	-	-	Active
MOUNTAIN GROVE PUMP FACILITY	29092	No	Pump Facility	-	-	Active
HICKORY RIDGE PUMP FACILITY	29093	No	Pump Facility	-	-	Active
POE01 - WTP	22593	No	Sampling Station	-	-	Active
TOC RAW	23249	No	Sampling Station	-	-	Active
MAIN TOWER	27247	No	Storage	-	-	Active
OVERLOOK STORAGE TANK	27248	No	Storage	-	-	Active
PLANT STORAGE TOWER	27249	No	Storage	-	-	Active
EAST CENTRAL OK WA WTP	11080	No	Treatment Plant	-	-	Active

1 - 13 of 13

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
EAST CENTRAL OK WA WTP	11080	Hypochlorination, Post	Disinfection
EAST CENTRAL OK WA WTP	11080	Coagulation	Particulate removal
EAST CENTRAL OK WA WTP	11080	Sedimentation	Particulate removal
EAST CENTRAL OK WA WTP	11080	Filtration, Rapid Sand	Particulate removal
EAST CENTRAL OK WA WTP	11080	Hypochlorination, Pre	Disinfection

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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