TONKAWA

Oklahoma — Community Water System — PWSID: OK2003603

System Information

PWSID	OK2003603
System Name	TONKAWA
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	06
Serves School	No
Wholesaler	No
First Reported	Mar 11, 1980
Last Reported	Nov 14, 2025

Location & Contact

State	Oklahoma
City	TONKAWA
ZIP Code	74653
Address	Joe Lewallen, Mayor
Organization	TONKAWA
Phone	580-628-2508

Population & Service

Population Served	3,299
Service Connections	1,255

Drinking Water Violations (114)

This water system has 114 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Aug 14, 2025	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Aug 14, 2025	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	RPT	No	No	—	—	—	Resolved	Jul 15, 2025	Lead and Copper Rule Revisions
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	RPT	No	No	—	—	—	Resolved	Jul 15, 2025	Lead and Copper Rule Revisions
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	TT	Yes	No	—	—	—	Resolved	Jul 15, 2025	Lead and Copper Rule Revisions
Oct 17, 2024	—	LEAD AND COPPER RULE REVISIONS	TT	Yes	No	—	—	—	Resolved	Jul 15, 2025	Lead and Copper Rule Revisions
Oct 1, 2022	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022	Sep 30, 2023	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Sep 30, 2023	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 19, 2017	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Jan 19, 2017	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Jan 19, 2017	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Jan 19, 2017	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Sep 17, 2015	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Sep 17, 2015	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Sep 17, 2015	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Sep 17, 2015	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Sep 18, 2014	—	E. COLI	MR	No	Yes	—	—	—	Unaddressed	—	Ground Water Rule
Sep 18, 2014	—	E. COLI	MR	No	Yes	—	—	—	Unaddressed	—	Ground Water Rule
Sep 18, 2014	—	E. COLI	MR	No	Yes	—	—	—	Unaddressed	—	Ground Water Rule
Sep 18, 2014	—	E. COLI	MR	No	Yes	—	—	—	Unaddressed	—	Ground Water Rule
Aug 21, 2014	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Aug 21, 2014	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Aug 21, 2014	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Aug 21, 2014	—	E. COLI	MR	No	No	—	—	—	Unaddressed	—	Ground Water Rule
Jul 1, 2014	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Mar 16, 2015	Consumer Confidence Rule
Jul 1, 2014	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Mar 16, 2015	Consumer Confidence Rule
Sep 1, 2013	Sep 30, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2013	Total Coliform Rule
Sep 1, 2013	Sep 30, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2013	Total Coliform Rule
Sep 1, 2013	Sep 30, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2013	Total Coliform Rule
Jul 1, 2013	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 14, 2015	Consumer Confidence Rule
Jul 1, 2012	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 14, 2015	Consumer Confidence Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
Oct 1, 2011	Oct 31, 2011	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2011	Total Coliform Rule
May 1, 2009	May 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2009	Total Coliform Rule
May 1, 2009	May 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2009	Total Coliform Rule
May 1, 2009	May 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2009	Total Coliform Rule
May 1, 2009	May 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2009	Total Coliform Rule
Sep 1, 2008	Sep 30, 2008	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2008	Total Coliform Rule
Sep 1, 2008	Sep 30, 2008	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2008	Total Coliform Rule
Sep 1, 2008	Sep 30, 2008	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2008	Total Coliform Rule
Jul 1, 2008	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 9, 2009	Lead and Copper Rule
Jul 1, 2008	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 9, 2009	Lead and Copper Rule
Jul 1, 2008	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 9, 2009	Lead and Copper Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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