LA1029006 · Louisiana

LAKE ST JOHN WATERWORKS DISTRICT 1

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 20
EPA health-based flag: 18
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 0

Counties listed by EPA · Concordia Parish, Louisiana

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 20 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2157 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 21, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4858	January 23, 2024	Informal	State Violation/Reminder Notice
4859	January 23, 2024	Informal	State Public Notification requested
4861	March 7, 2024	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2155 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 17, 2023 · EPA return-to-compliance field September 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4855	October 27, 2023	Informal	State Violation/Reminder Notice
4856	October 27, 2023	Informal	State Public Notification requested
4857	December 6, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2154 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 7, 2023 · EPA return-to-compliance field June 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4852	August 15, 2023	Informal	State Violation/Reminder Notice
4853	August 15, 2023	Informal	State Public Notification requested
4854	October 5, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2153 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 7, 2023 · EPA return-to-compliance field June 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4852	August 15, 2023	Informal	State Violation/Reminder Notice
4853	August 15, 2023	Informal	State Public Notification requested
4854	October 5, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2152 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4849	April 20, 2023	Informal	State Violation/Reminder Notice
4850	April 20, 2023	Informal	State Public Notification requested
4851	June 9, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2150 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4849	April 20, 2023	Informal	State Violation/Reminder Notice
4850	April 20, 2023	Informal	State Public Notification requested
4851	June 9, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2148 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 10, 2023 · EPA return-to-compliance field December 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4842	January 9, 2023	Informal	State Violation/Reminder Notice
4843	January 9, 2023	Informal	State Public Notification requested
4844	March 6, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2147 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 10, 2023 · EPA return-to-compliance field December 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4842	January 9, 2023	Informal	State Violation/Reminder Notice
4843	January 9, 2023	Informal	State Public Notification requested
4844	March 6, 2023	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2146 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4839	October 24, 2022	Informal	State Violation/Reminder Notice
4840	October 24, 2022	Informal	State Public Notification requested
4841	December 6, 2022	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2144 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 4, 2022 · period end September 21, 2022 · first reported October 7, 2022 · EPA return-to-compliance field September 21, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4834 September 1, 2022 Informal State Violation/Reminder Notice
4836 September 21, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4834	September 1, 2022	Informal	State Violation/Reminder Notice
4836	September 21, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2143 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4832	August 9, 2022	Informal	State Violation/Reminder Notice
4833	August 9, 2022	Informal	State Public Notification requested
4838	October 19, 2022	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2142 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 19, 2022 · EPA return-to-compliance field March 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4830	April 14, 2022	Informal	State Violation/Reminder Notice
4831	April 14, 2022	Informal	State Public Notification requested
4837	October 19, 2022	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 2141 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 14, 2021 · period end June 28, 2023 · first reported March 28, 2022 · EPA return-to-compliance field June 28, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4828 February 17, 2022 Informal State Violation/Reminder Notice
4863 June 28, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4828	February 17, 2022	Informal	State Violation/Reminder Notice
4863	June 28, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2140 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field December 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4825	January 11, 2022	Informal	State Violation/Reminder Notice
4826	January 11, 2022	Informal	State Public Notification requested
4829	February 21, 2022	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 2137 · Groundwater Rule · Ground Water Rule

Noncompliance period start September 6, 2021 · period end April 5, 2024 · first reported September 13, 2021 · EPA return-to-compliance field April 5, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821	September 8, 2021	Informal	State Violation/Reminder Notice
4822	September 8, 2021	Informal	State Public Notification requested
4864	July 17, 2023	Informal	State Public Notification received
4862	April 5, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2138 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported November 16, 2021 · EPA return-to-compliance field September 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4823	October 21, 2021	Informal	State Violation/Reminder Notice
4824	October 21, 2021	Informal	State Public Notification requested
4827	December 22, 2021	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2135 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 23, 2021 · EPA return-to-compliance field June 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4818	July 6, 2021	Informal	State Violation/Reminder Notice
4819	July 6, 2021	Informal	State Public Notification requested
4820	August 11, 2021	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2134 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 23, 2021 · EPA return-to-compliance field June 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4818	July 6, 2021	Informal	State Violation/Reminder Notice
4819	July 6, 2021	Informal	State Public Notification requested
4820	August 11, 2021	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2133 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported May 25, 2021 · EPA return-to-compliance field March 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4815	April 1, 2021	Informal	State Violation/Reminder Notice
4816	April 1, 2021	Informal	State Public Notification requested
4817	May 5, 2021	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 2131 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 22, 2021 · EPA return-to-compliance field December 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4660	May 6, 2014	Formal	State Administrative/Compliance Order without penalty issued
4812	January 19, 2021	Informal	State Violation/Reminder Notice
4813	January 19, 2021	Informal	State Public Notification requested
4814	March 9, 2021	Informal	State Public Notification received
4866	December 9, 2024	Resolving	State Compliance achieved

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility