Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1021701
PWS Name	TAHLEQUAH PWA
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	14458
County Served	Cherokee

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	327272	Returned to Compliance	17-OCT-2024	-	No
TT	LSL Inventory	Lead and Copper Rule Revisions	LEAD AND COPPER RULE REVISIONS	327271	Returned to Compliance	17-OCT-2024	-	Yes
MR	Monitoring, Regular	Inorganic Chemicals	Asbestos	327261	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	327237	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	Total Haloacetic Acids (HAA5)	327231	Returned to Compliance	30-JUN-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	327233	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
TT	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327175	Returned to Compliance	01-OCT-2019	31-OCT-2019	Yes
TT	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327249	Known	01-OCT-2019	31-OCT-2019	Yes
TT	Treatment Technique (SWTR and GWR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327248	Known	01-SEP-2019	30-SEP-2019	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327165	Returned to Compliance	01-AUG-2019	31-AUG-2019	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	327162	Returned to Compliance	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	327161	Returned to Compliance	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	327149	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	327148	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327122	Returned to Compliance	01-FEB-2014	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	327121	Returned to Compliance	01-JAN-2014	-	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	327110	Returned to Compliance	01-SEP-2009	30-SEP-2009	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	125700	Returned to Compliance	01-OCT-1999	31-OCT-1999	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	16998	Returned to Compliance	01-DEC-1997	31-DEC-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	74697	Known	01-APR-1997	30-APR-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	58796	Returned to Compliance	01-JUN-1996	30-JUN-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	118295	Returned to Compliance	01-JUL-1995	31-JUL-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	95895	Returned to Compliance	01-JUN-1995	30-JUN-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	395	Returned to Compliance	01-OCT-1994	31-OCT-1994	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	77694	Returned to Compliance	01-FEB-1994	28-FEB-1994	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	32094	Known	01-NOV-1993	30-NOV-1993	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	113893	Known	01-AUG-1993	31-AUG-1993	Yes

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
9000823	327272	SOX	State Compliance achieved	15-JUL-2025	State	-
9000822	327271	SOX	State Compliance achieved	15-JUL-2025	State	-
9000818	327261	SIF	State Public Notification received	01-JUL-2024	State	-
9000814	327248	SO6	State Intentional no-action	21-JUL-2023	State	-
9000813	327249	SO6	State Intentional no-action	21-JUL-2023	State	-
9000812	327237	SOX	State Compliance achieved	13-JUL-2023	State	4Q2022 HAA5 MCL/Closed, system achieved compliance.
9000811	327233	SOX	State Compliance achieved	13-JUL-2023	State	2Q2022 HAA5 MCL/Closed, system achieved compliance.
9000810	327175	SOX	State Compliance achieved	11-JUL-2023	State	OCT2019 LT2/Admin closed due to the age of the violations and system having attained compliance.
9000803	327231	SOX	State Compliance achieved	28-NOV-2022	State	-
9000784	327165	SIF	State Public Notification received	18-JUN-2020	State	-
9000776	327161	SOX	State Compliance achieved	27-MAY-2020	State	2Q2019 HAA5 MCL & 3Q2019 TTHM MCL; closed due to system achieving compliance.
9000776	327162	SOX	State Compliance achieved	27-MAY-2020	State	2Q2019 HAA5 MCL & 3Q2019 TTHM MCL; closed due to system achieving compliance.
9000757	327148	SOX	State Compliance achieved	22-MAR-2018	State	-
9000758	327149	SOX	State Compliance achieved	22-MAR-2018	State	-
9000748	125700	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.
9000745	118295	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.
9000744	95895	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.
9000747	16998	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.
9000743	395	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.
9000746	58796	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.
9000718	327121	SOX	State Compliance achieved	04-JUN-2014	State	-
9000719	327122	SOX	State Compliance achieved	04-JUN-2014	State	-
9000714	327110	SIF	State Public Notification received	13-JAN-2010	State	-
3002397	74697	SFL	State Administrative/Compliance Order without penalty issued	15-MAY-1997	State	-
413694	77694	SFL	State Administrative/Compliance Order without penalty issued	05-OCT-1994	State	-
413694	32094	SFL	State Administrative/Compliance Order without penalty issued	05-OCT-1994	State	-

1 - 26 of 26

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
ILLINOIS RIVER	15953	Yes	Intake	Surface water	Permanent	Active
LAKE TENKILLER	26412	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	17371	No	Distribution System/Zone	-	-	Active
TOC RAW AT TP001 WTP ILLINOIS RIVER	23243	No	Sampling Station	-	-	Active
TOC RAW AT TP002 WTP LAKE TENKILLER	26414	No	Sampling Station	-	-	Active
POE01 - WTP	22587	No	Sampling Station	-	-	Inactive
WEST TOWER 1	27065	No	Storage	-	-	Active
WEST TOWER 2	27066	No	Storage	-	-	Active
WHEELER TOWER	27067	No	Storage	-	-	Active
SOUTH TOWER	27068	No	Storage	-	-	Active
NORTHEAST TOWER	27069	No	Storage	-	-	Active
WTP TOWER	27070	No	Storage	-	-	Active
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	No	Treatment Plant	-	-	Active
TAHLEQUAH WTP (LAKE TENKILLER)	26413	No	Treatment Plant	-	-	Active

1 - 14 of 14

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Fluoridation	Other
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Gaseous Chlorination, Post	Disinfection
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Coagulation	Particulate removal
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Sedimentation	Particulate removal
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Filtration, Rapid Sand	Particulate removal
TAHLEQUAH WTP (ILLINOIS RIVER)	11070	Gaseous Chlorination, Pre	Disinfection
TAHLEQUAH WTP (LAKE TENKILLER)	26413	Gaseous Chlorination, Post	Disinfection
TAHLEQUAH WTP (LAKE TENKILLER)	26413	Innovative	Particulate removal
TAHLEQUAH WTP (LAKE TENKILLER)	26413	Chlorine Dioxide	Disinfection

1 - 9 of 9

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