Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK3004014
PWS Name	WISTER
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	1002
County Served	Le Flore

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	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	181918	Returned to Compliance	29-SEP-2025	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	181917	Returned to Compliance	01-JUL-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	181916	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	181909	Returned to Compliance	01-JUN-2009	31-AUG-2009	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	181910	Returned to Compliance	01-JUN-2009	31-AUG-2009	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	181908	Returned to Compliance	01-MAY-2008	31-JUL-2008	No
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	181907	Returned to Compliance	01-MAY-2008	31-JUL-2008	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	181906	Returned to Compliance	01-NOV-2005	30-NOV-2005	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181706	Returned to Compliance	01-OCT-2005	31-OCT-2005	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181501	Returned to Compliance	01-MAR-2001	31-MAR-2001	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181401	Returned to Compliance	01-FEB-2001	28-FEB-2001	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181301	Returned to Compliance	01-JAN-2001	31-JAN-2001	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181201	Returned to Compliance	01-DEC-2000	31-DEC-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181101	Returned to Compliance	01-NOV-2000	30-NOV-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	181001	Returned to Compliance	01-OCT-2000	31-OCT-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	180901	Returned to Compliance	01-SEP-2000	30-SEP-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	180801	Returned to Compliance	01-JUL-2000	31-JUL-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	180701	Returned to Compliance	01-JUN-2000	30-JUN-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	180601	Returned to Compliance	01-MAY-2000	31-MAY-2000	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	315399	Known	01-SEP-1999	30-SEP-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	222199	Known	01-JUN-1999	30-JUN-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	213899	Known	01-MAY-1999	31-MAY-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	119399	Returned to Compliance	01-MAR-1999	31-MAR-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	113499	Returned to Compliance	01-FEB-1999	28-FEB-1999	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	95697	Returned to Compliance	01-AUG-1997	31-AUG-1997	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	87293	Returned to Compliance	01-SEP-1993	30-SEP-1993	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	21092	Returned to Compliance	01-DEC-1991	31-DEC-1991	No

1 - 27 of 27

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9138944	181918	SOX	State Compliance achieved	07-NOV-2025	State	-
9138942	181917	SIF	State Public Notification received	02-MAY-2025	State	-
9138932	181916	SIF	State Public Notification received	03-JUN-2024	State	-
9138926	119399	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.
9138925	113499	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.
9138924	95697	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.
9138923	87293	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.
9138922	21092	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.
#9138909F	181909	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
#9138908F	181908	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
#9138910F	181907	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
#9138911F	181910	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
9138906	181906	SOX	State Compliance achieved	03-FEB-2006	State	Migrated - SOX date determined by receipt of Public Notice
9138907	181706	SOX	State Compliance achieved	01-DEC-2005	State	Met TCR monitoring RTC criteria
9138201	181001	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	180901	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	180801	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	181101	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	180601	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	181501	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	181401	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	180701	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	181201	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED
9138201	181301	SOX	State Compliance achieved	01-MAY-2001	State	SAFE BACT SAMPLES SUBMITTED

1 - 24 of 24

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PVIA	16494	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	18650	No	Distribution System/Zone	-	-	Active

1 - 2 of 2

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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