Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1020911
PWS Name	LANGSTON PWA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1670
County Served	Logan

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	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	295284	Open	01-OCT-2025	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	295282	Open	01-JUL-2025	-	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	295279	Returned to Compliance	01-MAR-2025	31-MAR-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	295278	Returned to Compliance	01-MAR-2025	31-MAR-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	295273	Returned to Compliance	01-SEP-2024	30-SEP-2024	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	295276	Known	01-SEP-2024	30-SEP-2024	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295271	Returned to Compliance	01-APR-2024	30-APR-2024	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295260	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295261	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295263	Returned to Compliance	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295262	Returned to Compliance	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295251	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295250	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295248	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295249	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	295178	Returned to Compliance	01-JUL-2017	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295180	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295173	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	295160	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	295074	Returned to Compliance	01-AUG-2010	31-AUG-2010	Yes
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	295073	Returned to Compliance	01-OCT-2009	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295072	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295044	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295045	Returned to Compliance	01-OCT-2008	31-DEC-2008	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295040	Returned to Compliance	01-AUG-2008	31-AUG-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295043	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295042	Returned to Compliance	01-JUL-2008	30-SEP-2008	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295035	Returned to Compliance	01-JUN-2008	30-JUN-2008	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295036	Returned to Compliance	01-JUN-2008	30-JUN-2008	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295037	Returned to Compliance	01-MAY-2008	31-MAY-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295038	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295039	Returned to Compliance	01-APR-2008	30-JUN-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295033	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295034	Returned to Compliance	01-JAN-2008	31-MAR-2008	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295032	Returned to Compliance	01-NOV-2007	30-NOV-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295030	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295031	Returned to Compliance	01-OCT-2007	31-DEC-2007	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295029	Returned to Compliance	01-OCT-2007	31-OCT-2007	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295028	Returned to Compliance	01-SEP-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	295024	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295023	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295025	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295026	Returned to Compliance	01-JUL-2007	30-SEP-2007	Yes
TT	Monthly Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295020	Returned to Compliance	01-JUL-2007	31-JUL-2007	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295022	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295021	Returned to Compliance	01-APR-2007	30-JUN-2007	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	295018	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	295017	Returned to Compliance	01-JAN-2007	31-MAR-2007	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295016	Returned to Compliance	01-JAN-2007	31-JAN-2007	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	295008	Returned to Compliance	01-NOV-2006	30-NOV-2006	Yes

1 - 50 of 103

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9196558	295284	SIE	State Public Notification requested	21-NOV-2025	State	-
9196555	295278	SOX	State Compliance achieved	26-JUN-2025	State	-
9196556	295279	SOX	State Compliance achieved	26-JUN-2025	State	-
9196551	295276	SIE	State Public Notification requested	07-MAR-2025	State	-
9196547	295273	SOX	State Compliance achieved	21-FEB-2025	State	-
9196546	295271	SOX	State Compliance achieved	30-JUL-2024	State	-
9196542	295260	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295251	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295250	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295261	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295262	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295249	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295263	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196542	295248	SOX	State Compliance achieved	08-APR-2022	State	2Q21-1Q21 & $ 4Q20-3Q20 TTHM MCL; closed due to system achieving compliance.
9196529	295178	SOX	State Compliance achieved	15-MAR-2018	State	-
9196527	295180	SOX	State Compliance achieved	08-MAR-2018	State	-
9196526	295173	SOX	State Compliance achieved	08-MAR-2018	State	-
9196519	295160	SOX	State Compliance achieved	27-FEB-2018	State	-
9196496	73393	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196506	74998	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196493	78391	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196503	79796	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196497	93994	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196499	95195	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196500	117795	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196507	121899	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196508	121900	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196509	122000	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196498	247994	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196501	32796	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196492	54291	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196502	49096	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196505	898	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196495	38193	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196504	38897	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
9196392	295040	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295037	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295036	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295035	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295032	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295029	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295028	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196392	295020	SOX	State Compliance achieved	12-SEP-2012	State	In Compliance PN Response to NOV AchievedTurbidity treatment technique violations - for Jul, Sept, Oct, Nov 2007 and May, Jun Aug 2008.
9196389	295074	SIF	State Public Notification received	14-DEC-2010	State	-
9196386	295073	SOX	State Compliance achieved	09-AUG-2010	State	-
9196382	290405	SOX	State Compliance achieved	26-AUG-2009	State	CO closed -system obtained compliance with DBP1 regs
9196382	290505	SOX	State Compliance achieved	26-AUG-2009	State	CO closed -system obtained compliance with DBP1 regs
9196382	290605	SOX	State Compliance achieved	26-AUG-2009	State	CO closed -system obtained compliance with DBP1 regs
9196382	290705	SOX	State Compliance achieved	26-AUG-2009	State	CO closed -system obtained compliance with DBP1 regs
9196382	290805	SOX	State Compliance achieved	26-AUG-2009	State	CO closed -system obtained compliance with DBP1 regs

1 - 50 of 101

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LANGSTON LAKE	15829	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	17302	No	Distribution System/Zone	-	-	Active
POE01- WTP	22380	No	Sampling Station	-	-	Active
TOC RAW	23174	No	Sampling Station	-	-	Active
RESEARCH FARM STANDPIPE	27814	No	Storage	-	-	Active
CUNSY STREET STANDPIPE	27815	No	Storage	-	-	Active
LANGSTON WTP	10929	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
LANGSTON WTP	10929	Gaseous Chlorination, Post	Disinfection
LANGSTON WTP	10929	Coagulation	Particulate removal
LANGSTON WTP	10929	Sedimentation	Particulate removal
LANGSTON WTP	10929	Filtration, Rapid Sand	Particulate removal
LANGSTON WTP	10929	Gaseous Chlorination, Pre	Disinfection

1 - 5 of 5

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.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions