Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1020702
PWS Name	CHANDLER
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	3142
County Served	Lincoln

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	TTHM	273578	Returned to Compliance	01-APR-2025	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	273579	Open	17-OCT-2024	-	Yes
RPT	LSL Reporting	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	273580	Open	17-OCT-2024	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273566	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	273560	Returned to Compliance	01-JAN-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273567	Returned to Compliance	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273564	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273565	Returned to Compliance	01-OCT-2022	31-DEC-2022	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273561	Returned to Compliance	29-SEP-2022	-	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	273562	Returned to Compliance	29-SEP-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273558	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273559	Returned to Compliance	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273555	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273556	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	273554	Returned to Compliance	01-JAN-2022	-	No
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	273537	Returned to Compliance	01-AUG-2019	31-AUG-2019	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	273536	Returned to Compliance	01-JUL-2019	31-JUL-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273534	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273532	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273531	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273528	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273526	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273524	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273522	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273514	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	273513	Returned to Compliance	01-APR-2016	30-APR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273516	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273518	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273510	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273507	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273503	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273501	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273496	Returned to Compliance	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273494	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273492	Returned to Compliance	01-APR-2014	30-JUN-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273490	Returned to Compliance	01-JAN-2014	31-MAR-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	273488	Returned to Compliance	01-OCT-2013	31-DEC-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273480	Returned to Compliance	01-OCT-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273479	Returned to Compliance	01-JUL-2012	30-SEP-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273476	Returned to Compliance	01-APR-2012	30-JUN-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273473	Returned to Compliance	01-JAN-2012	31-MAR-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273472	Returned to Compliance	01-OCT-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273471	Returned to Compliance	01-JUL-2011	30-SEP-2011	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	273470	Returned to Compliance	01-JUN-2011	30-JUN-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273469	Returned to Compliance	01-APR-2011	30-JUN-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273468	Returned to Compliance	01-JAN-2011	31-MAR-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273466	Returned to Compliance	01-OCT-2010	31-DEC-2010	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	273467	Returned to Compliance	01-AUG-2010	31-AUG-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	273465	Returned to Compliance	01-JUL-2010	30-SEP-2010	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	273464	Returned to Compliance	01-JUL-2010	31-JUL-2010	Yes

1 - 50 of 169

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9999900000000000001	273579	EFL	Federal Final Administrative Order issued	17-MAR-2026	ODSWeb	LSLI AO
9999900000000000001	273580	EFL	Federal Final Administrative Order issued	17-MAR-2026	ODSWeb	LSLI AO
9006538	273479	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006539	273480	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006537	273476	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006536	273473	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006535	273472	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006534	273471	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006533	273469	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006532	273468	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006531	273466	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006530	273465	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006529	273462	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006528	273461	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006527	273459	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006526	273458	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006525	273456	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006524	273455	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006523	273428	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006522	273427	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006521	273425	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006520	273416	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006519	273413	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006518	273409	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006517	273307	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006516	273206	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006515	272806	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006514	271405	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006513	271205	SO0	State no longer subject to Rule	18-JUN-2025	State	SO6 was applied to violation as instructed by EPA. Due to database issues, SO6 did not function. New action added to fix issues. ERH
9006512	273578	SOX	State Compliance achieved	04-JUN-2025	State	-
9006507	273560	SIF	State Public Notification received	31-MAY-2024	State	-
9006503	273567	SOX	State Compliance achieved	14-JUN-2023	State	1Q2023 TTHM MCL/System achieved compliance, admin closed.
9006500	273556	SOX	State Compliance achieved	14-JUN-2023	State	2Q2022 TTHM MCL/System achieved compliance, admin closed.
9006501	273558	SOX	State Compliance achieved	14-JUN-2023	State	3Q22 TTHM MCL/System achieved compliance, admin closed.
9006502	273564	SOX	State Compliance achieved	14-JUN-2023	State	4Q22 TTHM MCL/System achieved compliance, admin closed.
9006500	273555	SOX	State Compliance achieved	14-JUN-2023	State	2Q2022 TTHM MCL/System achieved compliance, admin closed.
9006501	273559	SOX	State Compliance achieved	14-JUN-2023	State	3Q22 TTHM MCL/System achieved compliance, admin closed.
9006503	273566	SOX	State Compliance achieved	14-JUN-2023	State	1Q2023 TTHM MCL/System achieved compliance, admin closed.
9006502	273565	SOX	State Compliance achieved	14-JUN-2023	State	4Q22 TTHM MCL/System achieved compliance, admin closed.
9006496	273554	SIF	State Public Notification received	04-APR-2023	State	PN performed via CCR. Dates used to prevent creation of unneeded violations.
9006488	273562	SIA	State Violation/Reminder Notice	18-JAN-2023	State	-
9006487	273561	SIA	State Violation/Reminder Notice	18-JAN-2023	State	-
9006463	273534	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273488	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273531	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273528	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273526	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273524	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273522	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT
9006463	273518	SOX	State Compliance achieved	03-MAR-2020	State	Stage 2 TTHM & HAA5 MCL & TOC TT

1 - 50 of 166

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BELL COW LAKE	25573	Yes	Intake	Surface water	Permanent	Active
CHANDLER LAKE	15799	Yes	Intake	Surface water	Permanent	Inactive
DISTRIBUTION SYSTEM	17283	No	Distribution System/Zone	-	-	Active
5TH AND OAK PUMP STATION	30650	No	Pump Facility	-	-	Active
OLD PLANT NORTH PUMP STATION	30651	No	Pump Facility	-	-	Active
OLD PLANT SOUTH PUMP STATION	30652	No	Pump Facility	-	-	Active
RAW WATER PUMP STATION	30653	No	Pump Facility	-	-	Active
POE01 - WTP	22473	No	Sampling Station	-	-	Active
TOC RAW	23154	No	Sampling Station	-	-	Active
EST ON WILLIAMS	23572	No	Storage	-	-	Active
STANDPIPE AT WATER PLANT	23573	No	Storage	-	-	Active
5TH AND OAK STANDPIPE	23575	No	Storage	-	-	Active
OLD PLANT NORTH GROUNDTANK	30584	No	Storage	-	-	Active
OLD PLANT SOUTH GROUNDTANK	30585	No	Storage	-	-	Active
STANDPIPE AT CITY HALL	23574	No	Storage	-	-	Inactive
CHANDLER WTP	10908	No	Treatment Plant	-	-	Active

1 - 16 of 16

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHANDLER WTP	10908	Coagulation	Particulate removal
CHANDLER WTP	10908	Chloramines	Disinfection
CHANDLER WTP	10908	Filtration, Rapid Sand	Particulate removal
CHANDLER WTP	10908	pH Adjustment, Pre	Softening (hardness removal)

1 - 4 of 4

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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