Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1020724
PWS Name	WELLSTON
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	825
County Served	Lincoln

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
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	4045	Returned to Compliance	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	4044	Returned to Compliance	17-OCT-2024	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4040	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4038	Returned to Compliance	29-SEP-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4035	Returned to Compliance	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4033	Returned to Compliance	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4032	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4030	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4024	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4014	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4013	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4015	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4012	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4011	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4010	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4009	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4005	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4007	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4003	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	4000	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3996	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3998	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3994	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	3988	Returned to Compliance	30-JUN-2016	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3992	Returned to Compliance	01-MAY-2016	31-MAY-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3991	Returned to Compliance	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	3990	Returned to Compliance	01-MAR-2016	31-MAR-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3993	Returned to Compliance	01-FEB-2016	29-FEB-2016	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3989	Returned to Compliance	01-JAN-2016	31-JAN-2016	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3986	Returned to Compliance	01-DEC-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3985	Returned to Compliance	01-DEC-2015	31-DEC-2015	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3983	Returned to Compliance	01-NOV-2015	30-NOV-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3984	Returned to Compliance	01-NOV-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3981	Returned to Compliance	01-OCT-2015	31-OCT-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3982	Returned to Compliance	01-OCT-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3979	Returned to Compliance	01-SEP-2015	30-SEP-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3980	Returned to Compliance	01-SEP-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3977	Returned to Compliance	01-AUG-2015	31-AUG-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3978	Returned to Compliance	01-AUG-2015	-	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3976	Returned to Compliance	01-JUL-2015	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	3959	Returned to Compliance	01-JUL-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3975	Returned to Compliance	01-JUL-2015	31-JUL-2015	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	3960	Returned to Compliance	01-JUL-2015	30-SEP-2015	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3973	Returned to Compliance	01-JUN-2015	30-JUN-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3974	Returned to Compliance	01-JUN-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3969	Returned to Compliance	01-MAY-2015	31-MAY-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3970	Returned to Compliance	01-MAY-2015	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3971	Returned to Compliance	01-APR-2015	30-APR-2015	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3972	Returned to Compliance	01-APR-2015	-	No
Other	Record Keeping	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3968	Returned to Compliance	01-MAR-2015	-	No

1 - 50 of 178

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
3367	4044	SOX	State Compliance achieved	15-JUL-2025	State	-
3368	4045	SOX	State Compliance achieved	15-JUL-2025	State	-
3364	4040	SOX	State Compliance achieved	12-SEP-2024	State	Stage 2 DBP TTHM MCL Violations./Closed, system achieved compliance.
3364	4030	SOX	State Compliance achieved	12-SEP-2024	State	Stage 2 DBP TTHM MCL Violations./Closed, system achieved compliance.
3364	4032	SOX	State Compliance achieved	12-SEP-2024	State	Stage 2 DBP TTHM MCL Violations./Closed, system achieved compliance.
3364	4033	SOX	State Compliance achieved	12-SEP-2024	State	Stage 2 DBP TTHM MCL Violations./Closed, system achieved compliance.
3364	4035	SOX	State Compliance achieved	12-SEP-2024	State	Stage 2 DBP TTHM MCL Violations./Closed, system achieved compliance.
3363	4038	SOX	State Compliance achieved	05-APR-2024	State	-
3345	4011	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4012	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4013	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4014	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4015	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4024	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4009	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4007	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4005	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4003	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4000	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	3998	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	3996	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	3994	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3345	4010	SOX	State Compliance achieved	19-APR-2022	State	Stage 2 TTHM & HAA5 MCL & TOC TT; closed due to all requirements fulfilled.
3328	3988	SFO	State Administrative/Compliance Order with penalty issued	26-AUG-2019	State	Stage 2 TTHM & HAA5 MCL & TOC TT
3323	3992	SIF	State Public Notification received	08-MAY-2019	State	-
3324	3991	SIF	State Public Notification received	08-MAY-2019	State	-
3325	3990	SIF	State Public Notification received	08-MAY-2019	State	-
3327	3989	SIF	State Public Notification received	08-MAY-2019	State	-
3326	3993	SIF	State Public Notification received	08-MAY-2019	State	-
3288	3982	SOX	State Compliance achieved	04-APR-2017	State	-
3289	3983	SOX	State Compliance achieved	04-APR-2017	State	-
3290	3984	SOX	State Compliance achieved	04-APR-2017	State	-
3291	3985	SOX	State Compliance achieved	04-APR-2017	State	-
3280	3960	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3268	3963	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3269	3964	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3270	3965	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3271	3966	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3272	3967	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3273	3968	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3276	3969	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3277	3970	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3274	3971	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3275	3972	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3278	3973	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3279	3974	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3281	3975	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3282	3976	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3283	3977	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.
3284	3978	SOX	State Compliance achieved	04-APR-2017	State	System sampled subsequent to violation. System RTC.

1 - 50 of 177

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BELL COW LAKE	20449	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	20451	No	Distribution System/Zone	-	-	Active
RAW WATER PUMP STATION	30771	No	Pump Facility	-	-	Active
POE01 - WTP	22614	No	Sampling Station	-	-	Active
TOC RAW	23163	No	Sampling Station	-	-	Active
RT 66 TANK	29982	No	Storage	-	-	Active
CEDAR STREET TANK	29983	No	Storage	-	-	Active
TREATMENT PLANT	20450	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	20450	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT	20450	Filtration, Rapid Sand	Inorganics removal
TREATMENT PLANT	20450	Sedimentation	Disinfection by-products control

1 - 3 of 3

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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