Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	LA1085032
PWS Name	TOWN OF ZWOLLE WATER SYSTEM
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	2520
County Served	Sabine Parish

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
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006900	Open	12-FEB-2025	-	No
MR	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	7006903	Returned to Compliance	13-NOV-2024	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006896	Returned to Compliance	01-OCT-2024	31-DEC-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006895	Returned to Compliance	01-JUL-2024	30-SEP-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006894	Returned to Compliance	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006892	Returned to Compliance	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006891	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	7006886	Returned to Compliance	01-OCT-2022	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006884	Returned to Compliance	22-MAY-2022	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006883	Returned to Compliance	04-MAY-2022	-	No
TT	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	7006878	Returned to Compliance	15-APR-2022	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006880	Returned to Compliance	01-APR-2022	30-JUN-2022	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006882	Returned to Compliance	16-FEB-2022	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006877	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006874	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006872	Returned to Compliance	11-AUG-2021	-	No
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006867	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006862	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006866	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006868	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006864	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006865	Returned to Compliance	02-JUL-2021	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	7006863	Returned to Compliance	02-JUL-2021	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006873	Returned to Compliance	01-JUL-2021	30-SEP-2021	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	7006871	Returned to Compliance	05-MAY-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006869	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006861	Returned to Compliance	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006847	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006831	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006827	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006822	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006815	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006814	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006811	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	7006809	Returned to Compliance	01-MAY-2015	31-MAY-2015	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006810	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	7006808	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	7006804	Returned to Compliance	01-AUG-2013	31-AUG-2013	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1V01	Returned to Compliance	01-JUL-2000	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1V00	Returned to Compliance	19-OCT-1999	21-NOV-2000	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7006697	Returned to Compliance	15-AUG-1997	14-SEP-1997	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7001397	Returned to Compliance	15-NOV-1996	14-DEC-1996	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	7001593	Returned to Compliance	15-JAN-1993	14-FEB-1993	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	7001693	Returned to Compliance	15-JAN-1993	14-FEB-1993	No

1 - 44 of 44

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9300600	7006903	SIA	State Violation/Reminder Notice	22-JUL-2025	State	-
9300595	7006900	SIA	State Violation/Reminder Notice	09-MAY-2025	State	-
9300594	7006808	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006814	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006891	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006822	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006827	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006847	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006861	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006874	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006877	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006892	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006896	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300594	7006815	SID	State Site Visit for enforcement purposes	09-APR-2025	State	POIR for C-16-085-035-ETT Item 4.) - O/C for control of DBPs
9300603	7006810	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006894	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006831	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006811	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006880	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006873	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006869	SOX	State Compliance achieved	11-MAR-2025	State	-
9300603	7006895	SOX	State Compliance achieved	11-MAR-2025	State	-
9300575	7006862	SOX	State Compliance achieved	31-JAN-2024	State	-
9300581	7006886	SOX	State Compliance achieved	21-SEP-2023	State	-
9300555	7006878	SIF	State Public Notification received	18-NOV-2022	State	-
9300559	7006884	SOX	State Compliance achieved	28-SEP-2022	State	-
9300548	7006883	SOX	State Compliance achieved	14-SEP-2022	State	-
9300545	7006882	SOX	State Compliance achieved	29-JUL-2022	State	-
9300520	7006872	SOX	State Compliance achieved	01-NOV-2021	State	-
9300534	7006866	SOX	State Compliance achieved	21-OCT-2021	State	-
9300535	7006864	SOX	State Compliance achieved	21-OCT-2021	State	-
9300536	7006863	SOX	State Compliance achieved	21-OCT-2021	State	-
9300537	7006868	SOX	State Compliance achieved	21-OCT-2021	State	-
9300513	7006871	SOX	State Compliance achieved	24-AUG-2021	State	-
9300512	7006867	SIF	State Public Notification received	10-AUG-2021	State	-
9300512	7006865	SIF	State Public Notification received	10-AUG-2021	State	-
9300418	7006697	SOX	State Compliance achieved	26-APR-2016	State	-
9300418	7001693	SOX	State Compliance achieved	26-APR-2016	State	-
9300418	7001593	SOX	State Compliance achieved	26-APR-2016	State	-
9300418	7001397	SOX	State Compliance achieved	26-APR-2016	State	-
9300409	7006809	SOX	State Compliance achieved	11-FEB-2016	State	-
9300396	7006804	SOX	State Compliance achieved	25-MAR-2014	State	-
#2015-EOX	1V01	EOX	Federal Compliance achieved	01-JUN-2005	ODSWeb	CCR was done for 2004 on 6/1/2005. EOX per LDHH. HB
1E04	1V00	EOX	Federal Compliance achieved	21-NOV-2000	ODSWeb	-

1 - 44 of 44

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL #7	14320	Yes	Well	Ground water	Emergency	Active
WELL #2	7181	Yes	Well	Ground water	Permanent	Active
WELL #1	7180	Yes	Well	Ground water	Permanent	Active
WELL #6	7179	Yes	Well	Ground water	Permanent	Active
WELL #5	7178	Yes	Well	Ground water	Permanent	Active
WELL #4	7177	Yes	Well	Ground water	Permanent	Active
WELL #3	7176	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	9120	No	Distribution System/Zone	-	-	Active
ELEVATED TANK	16839	No	Storage	-	-	Active
MAIN PLANT @ WELL YARD SITE	17208	No	Treatment Plant	-	-	Active
TREATMENT PLANT - WELL #7	22498	No	Treatment Plant	-	-	Active
TP #1 @ ELEVATED TANK	4007	No	Treatment Plant	-	-	Inactive

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MAIN PLANT @ WELL YARD SITE	17208	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT - WELL #7	22498	Gaseous Chlorination, Post	Disinfection
TP #1 @ ELEVATED TANK	4007	Hypochlorination, Post	Disinfection

1 - 3 of 3

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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