LA1101006 · Louisiana
CITY OF PATTERSON WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 7
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 0
Counties listed by EPA · St. Mary 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 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 113 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000839 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 11, 2026 · EPA return-to-compliance field June 30, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued 401065 May 20, 2026 Informal State Violation/Reminder Notice 401066 May 20, 2026 Informal State Public Notification requested 401067 June 8, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000837 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 13, 2026 · EPA return-to-compliance field March 31, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued 401061 February 26, 2026 Informal State Violation/Reminder Notice 401062 February 26, 2026 Informal State Public Notification requested 401063 March 26, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000832 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported February 18, 2026 · EPA return-to-compliance field December 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401054 November 4, 2025 Informal State Violation/Reminder Notice 401055 November 4, 2025 Informal State Public Notification requested 401060 December 4, 2025 Informal State Public Notification received 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000829 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported November 14, 2025 · EPA return-to-compliance field September 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401048 August 13, 2025 Informal State Violation/Reminder Notice 401049 August 13, 2025 Informal State Public Notification requested 401053 August 25, 2025 Informal State Public Notification received 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 3000827 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start April 29, 2025 · period end August 20, 2025 · first reported August 20, 2025 · EPA return-to-compliance field August 20, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401050 August 20, 2025 Resolving State Compliance achieved EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000826 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 20, 2025 · EPA return-to-compliance field June 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401046 June 13, 2025 Informal State Violation/Reminder Notice 401047 June 13, 2025 Informal State Public Notification requested 401052 August 25, 2025 Informal State Public Notification received 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000825 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401044 March 24, 2025 Informal State Violation/Reminder Notice 401045 March 24, 2025 Informal State Public Notification requested 401051 August 25, 2025 Informal State Public Notification received 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 3000823 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 26, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 401039 December 4, 2024 Informal State Violation/Reminder Notice 401040 December 4, 2024 Informal State Public Notification requested 401041 January 14, 2025 Informal State Public Notification received 401059 January 7, 2026 Formal State Administrative/Compliance Order without penalty issued
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