Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK2001601
PWS Name	STERLING PWA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	762
County Served	Comanche

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	145658	Returned to Compliance	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	145657	Returned to Compliance	17-OCT-2024	-	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	145651	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	145650	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	145643	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	145644	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	145646	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	145647	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	145648	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	145652	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	145649	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	145645	Returned to Compliance	01-JAN-2020	31-DEC-2022	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	145460	Returned to Compliance	01-JAN-2016	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	145436	Returned to Compliance	01-JAN-2014	31-AUG-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	145437	Returned to Compliance	01-JAN-2014	31-AUG-2014	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	145432	Returned to Compliance	01-JAN-2011	31-DEC-2013	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	145408	Returned to Compliance	01-JAN-2007	31-JAN-2007	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	145006	Returned to Compliance	01-JAN-2006	31-JAN-2006	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	144706	Returned to Compliance	01-DEC-2005	31-DEC-2005	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	144604	Returned to Compliance	01-JAN-2004	31-JAN-2004	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	39497	Returned to Compliance	01-FEB-1997	28-FEB-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	35597	Returned to Compliance	01-JAN-1997	31-JAN-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	8697	Returned to Compliance	01-NOV-1996	30-NOV-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	33396	Returned to Compliance	01-FEB-1996	29-FEB-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	29396	Returned to Compliance	01-JAN-1996	31-JAN-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	34895	Returned to Compliance	01-FEB-1995	28-FEB-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	29695	Returned to Compliance	01-JAN-1995	31-JAN-1995	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	144494	Returned to Compliance	01-JUN-1993	14-JUN-1994	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	43993	Returned to Compliance	01-MAY-1993	31-MAY-1993	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	27292	Returned to Compliance	01-JAN-1992	31-JAN-1992	Yes

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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
9001564	145657	SOX	State Compliance achieved	15-JUL-2025	State	-
9001565	145658	SOX	State Compliance achieved	15-JUL-2025	State	-
9001557	145651	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145652	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145650	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145649	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145648	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145647	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145646	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145645	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145644	SIF	State Public Notification received	10-JUL-2023	State	-
9001557	145643	SIF	State Public Notification received	10-JUL-2023	State	-
9001544	145460	SIF	State Public Notification received	30-JUN-2017	State	-
9001537	33396	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.
9001536	29396	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.
9001531	27292	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.
9001538	8697	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.
9001540	39497	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.
9001532	43993	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.
9001533	144494	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.
9001535	34895	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.
9001534	29695	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.
9001539	35597	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.
9001522	145436	SIF	State Public Notification received	01-OCT-2015	State	-
9001522	145437	SIF	State Public Notification received	01-OCT-2015	State	-
9001521	145432	SOX	State Compliance achieved	03-MAR-2015	State	3yr 2011 soc sox
9001511	145408	SOX	State Compliance achieved	09-APR-2007	State	Met TCR monitoring RTC criteria
9001306	145006	SOX	State Compliance achieved	13-MAR-2006	State	Migrated - SOX date determined by receipt of Public Notice
9001206	144706	SOX	State Compliance achieved	13-MAR-2006	State	Migrated - SOX date determined by receipt of Public Notice
9001104	144604	SOX	State Compliance achieved	26-FEB-2004	State	Migrated - SOX date determined by receipt of Public Notice

1 - 30 of 30

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL #1	12411	Yes	Well	Ground water	Interim	Inactive
WELL#5	12415	Yes	Well	Ground water	Permanent	Active
WELL #4	12414	Yes	Well	Ground water	Permanent	Active
WELL #3	12413	Yes	Well	Ground water	Permanent	Active
WELL #2	12412	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	17681	No	Distribution System/Zone	-	-	Active
WELLS	19678	No	Sampling Station	-	-	Active
CHLORINATION STATION	11020	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINATION STATION	11020	Hypochlorination, Post	Disinfection

1 - 1 of 1

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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