Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK3007218
PWS Name	OWASSO
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	23000
County Served	Tulsa

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	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	270322	Returned to Compliance	17-OCT-2024	-	Yes
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	270323	Returned to Compliance	17-OCT-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	270315	Returned to Compliance	01-OCT-2016	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	270310	Returned to Compliance	01-FEB-2013	28-FEB-2013	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	270307	Returned to Compliance	01-OCT-2011	31-OCT-2011	Yes
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	270312	Returned to Compliance	01-DEC-2007	31-JAN-2008	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	270311	Returned to Compliance	01-DEC-2007	31-JAN-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	270306	Returned to Compliance	01-DEC-2005	31-DEC-2005	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	270106	Returned to Compliance	01-OCT-2005	31-OCT-2005	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	270206	Returned to Compliance	01-OCT-2005	31-OCT-2005	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	269905	Returned to Compliance	01-NOV-2004	30-NOV-2004	Yes
MR	Monitoring, Repeat Major (TCR)	Total Coliform Rule	Coliform (TCR)	269805	Returned to Compliance	01-SEP-2004	30-SEP-2004	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	269704	Returned to Compliance	01-SEP-2003	30-SEP-2003	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	13799	Returned to Compliance	01-OCT-1998	31-OCT-1998	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	8398	Returned to Compliance	01-OCT-1997	31-OCT-1997	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	90196	Returned to Compliance	01-SEP-1996	30-SEP-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	77496	Returned to Compliance	01-JUL-1996	31-JUL-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	52096	Returned to Compliance	01-APR-1996	30-APR-1996	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	41795	Returned to Compliance	01-MAR-1995	31-MAR-1995	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	269494	Returned to Compliance	01-SEP-1994	30-SEP-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	98094	Returned to Compliance	01-JUN-1994	30-JUN-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	86194	Returned to Compliance	01-APR-1994	30-APR-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	65294	Returned to Compliance	01-MAR-1994	31-MAR-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	60994	Returned to Compliance	01-FEB-1994	28-FEB-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	21194	Returned to Compliance	01-DEC-1993	31-DEC-1993	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	78693	Returned to Compliance	01-AUG-1993	31-AUG-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	96892	Returned to Compliance	01-SEP-1992	30-SEP-1992	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	71892	Returned to Compliance	01-JUN-1992	30-JUN-1992	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	22592	Returned to Compliance	01-DEC-1991	31-DEC-1991	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
3746	270322	SOX	State Compliance achieved	15-JUL-2025	State	-
3747	270323	SOX	State Compliance achieved	15-JUL-2025	State	-
3741	270315	SIF	State Public Notification received	29-OCT-2019	State	Distributed with CCR
3731	269494	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.
3725	78693	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.
3724	96892	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.
3735	90196	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.
3729	86194	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.
3730	98094	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.
3734	77496	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.
3723	71892	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.
3736	8398	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.
3737	13799	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.
3726	21194	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.
3722	22592	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.
3732	41795	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.
3733	52096	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.
3727	60994	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.
3728	65294	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.
3718	270312	SOX	State Compliance achieved	20-FEB-2015	State	-
3718	270311	SOX	State Compliance achieved	20-FEB-2015	State	-
3716	270310	SOX	State Compliance achieved	16-APR-2013	State	-
3708	270307	SIE	State Public Notification requested	17-NOV-2011	State	-
3706	270306	SOX	State Compliance achieved	17-FEB-2006	State	Migrated - SOX date determined by receipt of Public Notice
3306	269805	SOX	State Compliance achieved	21-DEC-2005	State	Migrated - SOX date determined by receipt of Public Notice
3606	270206	SOX	State Compliance achieved	01-DEC-2005	State	Migrated - SOX date determined by receipt of Public Notice
3506	270106	SOX	State Compliance achieved	01-DEC-2005	State	Migrated - SOX date determined by receipt of Public Notice
3405	269905	SOX	State Compliance achieved	22-MAR-2005	State	Migrated - SOX date determined by receipt of Public Notice
3204	269704	SOX	State Compliance achieved	24-NOV-2003	State	Migrated - SOX date determined by receipt of Public Notice

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All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
TULSA MOHAWK	17050	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	18962	No	Distribution System/Zone	-	-	Active

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Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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