Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK2003603
PWS Name	TONKAWA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	3299
County Served	Kay

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, Source Water (GWR)	Ground Water Rule	E. COLI	288177	Open	14-AUG-2025	-	No
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	288176	Returned to Compliance	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	288175	Returned to Compliance	17-OCT-2024	-	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	288172	Returned to Compliance	01-OCT-2022	30-SEP-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	288173	Returned to Compliance	01-OCT-2022	30-SEP-2023	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	288141	Open	19-JAN-2017	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	288139	Open	17-SEP-2015	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	288136	Open	18-SEP-2014	-	No
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	288137	Open	21-AUG-2014	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	288135	Returned to Compliance	01-JUL-2014	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	288132	Returned to Compliance	01-SEP-2013	30-SEP-2013	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	288134	Returned to Compliance	01-JUL-2013	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	288131	Returned to Compliance	01-JUL-2012	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	288125	Returned to Compliance	01-OCT-2011	31-OCT-2011	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	288121	Returned to Compliance	01-MAY-2009	31-MAY-2009	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	288114	Returned to Compliance	01-SEP-2008	30-SEP-2008	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	288123	Returned to Compliance	01-JUL-2008	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	288122	Returned to Compliance	01-JUL-2008	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	288106	Returned to Compliance	01-MAR-2007	31-MAR-2007	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	288112	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	288107	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	288109	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	288108	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	288113	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	288111	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Carbofuran	288110	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	287904	Returned to Compliance	01-FEB-2004	29-FEB-2004	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	287704	Returned to Compliance	01-JAN-2004	31-JAN-2004	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	287504	Returned to Compliance	01-SEP-2003	30-SEP-2003	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	286002	Returned to Compliance	01-JUL-2001	30-SEP-2001	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	286102	Returned to Compliance	01-JUL-2001	30-SEP-2001	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	285902	Returned to Compliance	01-JUL-2001	30-SEP-2001	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	285701	Returned to Compliance	01-APR-2001	30-JUN-2001	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	285601	Returned to Compliance	01-APR-2001	30-JUN-2001	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Beta Particle Activity	285801	Returned to Compliance	01-APR-2001	30-JUN-2001	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	286902	Returned to Compliance	01-JAN-2001	31-DEC-2001	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	286802	Returned to Compliance	01-JAN-1999	31-DEC-2001	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	285598	Returned to Compliance	01-SEP-1998	30-SEP-1998	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	35395	Returned to Compliance	01-FEB-1995	28-FEB-1995	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
9203676	288177	SIE	State Public Notification requested	19-SEP-2025	State	-
9203673	288175	SOX	State Compliance achieved	15-JUL-2025	State	-
9203674	288176	SOX	State Compliance achieved	15-JUL-2025	State	-
9203670	288173	SIF	State Public Notification received	06-AUG-2024	State	-
9203670	288172	SIF	State Public Notification received	06-AUG-2024	State	-
9203664	288137	SO6	State Intentional no-action	22-NOV-2022	State	Violation older than 3 years. Cannot pursue enforcement.
9203666	288141	SO6	State Intentional no-action	22-NOV-2022	State	Violation older than 3 years. Cannot pursue enforcement.
9203665	288139	SO6	State Intentional no-action	22-NOV-2022	State	Violation older than 3 years. Cannot pursue enforcement.
9203663	288136	SO6	State Intentional no-action	22-NOV-2022	State	Violation older than 3 years. Cannot pursue enforcement.
9203656	285598	SOX	State Compliance achieved	04-AUG-2016	State	AUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
9203655	35395	SOX	State Compliance achieved	04-AUG-2016	State	AUTOMATIC RETURN TO COMPLIANCE 8/4/2016 - Violations Should be Closed Out because PWS is in complaince.
9203644	288134	SOX	State Compliance achieved	14-OCT-2015	State	CCR RTC
9203644	288131	SOX	State Compliance achieved	14-OCT-2015	State	CCR RTC
9203642	288135	SOX	State Compliance achieved	16-MAR-2015	State	CCR RTC
9203640	288132	SIE	State Public Notification requested	14-NOV-2013	State	-
9203635	288125	SIE	State Public Notification requested	17-NOV-2011	State	-
9203628	288121	SOX	State Compliance achieved	28-MAR-2010	State	BacT monitoring violation closed because of PN and sampling history
9203626	288112	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288107	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288113	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288108	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288111	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288110	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203626	288109	SOX	State Compliance achieved	21-SEP-2009	State	3 yr 05 SOC MR
9203631	288122	SIF	State Public Notification received	11-JUN-2009	State	1-6/08 PbCu M/R and 7-12/08 PbCu M/R -- SM
9203631	288123	SIF	State Public Notification received	11-JUN-2009	State	1-6/08 PbCu M/R and 7-12/08 PbCu M/R -- SM
9203615	288114	SIE	State Public Notification requested	27-OCT-2008	State	-
9203611	288106	SOX	State Compliance achieved	07-JUN-2007	State	Met TCR monitoring RTC criteria
9203506	287904	SOX	State Compliance achieved	16-MAY-2006	State	Migrated - SOX date determined by receipt of Public Notice
9203404	287704	SOX	State Compliance achieved	24-MAR-2004	State	Migrated - SOX date determined by receipt of Public Notice
9203304	287504	SOX	State Compliance achieved	20-NOV-2003	State	Migrated - SOX date determined by receipt of Public Notice
9200702	286902	SOX	State Compliance achieved	22-AUG-2002	State	NITRATE MONITORING VIO, 2001
9142802	286802	SOX	State Compliance achieved	21-MAR-2002	State	NITRITE MONITORING VIO 1/3 YRS
9099702	285902	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01
9099702	286002	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01
9099702	286102	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01
9099702	285601	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01
9099702	285701	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01
9099702	285801	SOX	State Compliance achieved	14-DEC-2001	State	PN SUBMITTED 12/4/01

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1	13354	Yes	Well	Ground water	Emergency	Active
WEST NEW WELL	22233	Yes	Well	Ground water	Permanent	Inactive
EAST NEW WELL	22232	Yes	Well	Ground water	Permanent	Inactive
WELL 19	13353	Yes	Well	Ground water	Permanent	Inactive
WELL 20	13352	Yes	Well	Ground water	Permanent	Inactive
WELL 13	13347	Yes	Well	Ground water	Permanent	Inactive
WELL 14	13344	Yes	Well	Ground water	Permanent	Inactive
WELL 22	13343	Yes	Well	Ground water	Permanent	Inactive
WELL 21	13341	Yes	Well	Ground water	Permanent	Inactive
WELL 3	28753	Yes	Well	Ground water	Permanent	Active
WELL 4	20545	Yes	Well	Ground water	Permanent	Active
WELL 17	13359	Yes	Well	Ground water	Permanent	Active
WELL 16	13358	Yes	Well	Ground water	Permanent	Active
WELL 18	13357	Yes	Well	Ground water	Permanent	Active
WELL 6	13356	Yes	Well	Ground water	Permanent	Active
WELL 9	13355	Yes	Well	Ground water	Permanent	Active
WELL 5	13351	Yes	Well	Ground water	Permanent	Active
WELL 8	13350	Yes	Well	Ground water	Permanent	Active
WELL 2	13349	Yes	Well	Ground water	Permanent	Active
WELL 12	13348	Yes	Well	Ground water	Permanent	Active
WELL 11	13346	Yes	Well	Ground water	Permanent	Active
WELL 10	13345	Yes	Well	Ground water	Permanent	Active
WELL 15	13342	Yes	Well	Ground water	Permanent	Active
WELL 16A	20551	Yes	Well	Ground water	Other	Inactive
WELL 15A	20550	Yes	Well	Ground water	Other	Inactive
WELL 9A	20549	Yes	Well	Ground water	Other	Inactive
WELL 7A	20548	Yes	Well	Ground water	Other	Inactive
WELL 6A	20547	Yes	Well	Ground water	Other	Inactive
WELL 5A	20546	Yes	Well	Ground water	Other	Inactive
WELL 7	13340	Yes	Well	Ground water	Emergency	Inactive
DISTRIBUTION SYSTEM	17922	No	Distribution System/Zone	-	-	Active
IN-TOWN PUMP STATION	30404	No	Pump Facility	-	-	Active
WELLFIELD	19830	No	Sampling Station	-	-	Active
CENRAL STANDPIPE	28743	No	Storage	-	-	Active
EAST STANDPIPE	28744	No	Storage	-	-	Active
WEST STANDPIPE	28745	No	Storage	-	-	Active
IN-TOWN CLEARWELL	30405	No	Storage	-	-	Active
OUT-OF-TOWN CLEARWELL	30406	No	Storage	-	-	Active
HIGH SCHOOL WATER TOWER	30464	No	Storage	-	-	Active
CHLORINATION STATION	23637	No	Treatment Plant	-	-	Active
CL2 BOOSTER STATION	25352	No	Treatment Plant	-	-	Active

1 - 41 of 41

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINATION STATION	23637	Gaseous Chlorination, Post	Disinfection
CL2 BOOSTER STATION	25352	Hypochlorination, Post	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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