LA1097010 · Louisiana
CITY OF OPELOUSAS WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 9
- EPA health-based flag
- 6
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 1
Counties listed by EPA · St. Landry 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 9 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 347 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010544 · Groundwater Rule · Ground Water RuleNoncompliance period start April 2, 2025 · period end December 18, 2025 · first reported August 20, 2025 · EPA return-to-compliance field December 18, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201834 April 2, 2025 Informal State Violation/Reminder Notice 9201835 April 2, 2025 Informal State Public Notification requested 9201852 July 7, 2025 Informal State Public Notification received 9201881 December 18, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4010539 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 17, 2024 · period end January 30, 2025 · first reported February 26, 2025 · EPA return-to-compliance field January 30, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201829 December 26, 2024 Informal State Violation/Reminder Notice 9201830 January 30, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 4010538 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · period end June 13, 2025 · first reported December 30, 2024 · EPA return-to-compliance field June 13, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201828 November 27, 2024 Informal State Violation/Reminder Notice 9201857 June 13, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010532 · Groundwater Rule · Ground Water RuleNoncompliance period start June 4, 2024 · period end February 19, 2025 · first reported August 23, 2024 · EPA return-to-compliance field February 19, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201823 June 11, 2024 Informal State Violation/Reminder Notice 9201824 June 11, 2024 Informal State Public Notification requested 9201831 February 19, 2025 Informal State Public Notification received 9201832 February 19, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010496 · Groundwater Rule · Ground Water RuleNoncompliance period start October 27, 2021 · period end February 1, 2023 · first reported December 20, 2021 · EPA return-to-compliance field February 1, 2023
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201799 October 27, 2021 Informal State Violation/Reminder Notice 9201800 October 27, 2021 Informal State Public Notification requested 9201803 May 3, 2022 Informal State Public Notification received 9201805 August 10, 2022 Formal State Administrative/Compliance Order without penalty issued 9201809 November 15, 2022 Informal State Site Visit for enforcement purposes 9201812 February 1, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010495 · Groundwater Rule · Ground Water RuleNoncompliance period start October 27, 2021 · period end October 27, 2021 · first reported December 20, 2021 · EPA return-to-compliance field October 27, 2021
10 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201799 October 27, 2021 Informal State Violation/Reminder Notice 9201800 October 27, 2021 Informal State Public Notification requested 9201882 October 27, 2021 Resolving State Compliance achieved 9201803 May 3, 2022 Informal State Public Notification received 9201805 August 10, 2022 Formal State Administrative/Compliance Order without penalty issued 9201811 November 16, 2022 Informal State Site Visit for enforcement purposes 9201815 February 20, 2023 Informal State Site Visit for enforcement purposes 9201846 June 18, 2025 Informal State Site Visit for enforcement purposes 9201865 October 22, 2025 Informal State Site Visit for enforcement purposes 9201873 January 5, 2026 Informal State Site Visit for enforcement purposes EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010494 · Groundwater Rule · Ground Water RuleNoncompliance period start October 27, 2021 · period end January 31, 2023 · first reported December 20, 2021 · EPA return-to-compliance field January 31, 2023
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201799 October 27, 2021 Informal State Violation/Reminder Notice 9201800 October 27, 2021 Informal State Public Notification requested 9201803 May 3, 2022 Informal State Public Notification received 9201805 August 10, 2022 Formal State Administrative/Compliance Order without penalty issued 9201808 September 16, 2022 Informal State Site Visit for enforcement purposes 9201886 January 31, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4010493 · Groundwater Rule · Ground Water RuleNoncompliance period start October 27, 2021 · period end February 1, 2023 · first reported December 20, 2021 · EPA return-to-compliance field February 1, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201799 October 27, 2021 Informal State Violation/Reminder Notice 9201800 October 27, 2021 Informal State Public Notification requested 9201803 May 3, 2022 Informal State Public Notification received 9201805 August 10, 2022 Formal State Administrative/Compliance Order without penalty issued 9201812 February 1, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 4010462 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start June 8, 2018 · period end March 27, 2023 · first reported August 16, 2018 · EPA return-to-compliance field March 27, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9201780 August 1, 2018 Informal State Violation/Reminder Notice 9201805 August 10, 2022 Formal State Administrative/Compliance Order without penalty issued 9201807 September 16, 2022 Informal State Site Visit for enforcement purposes 9201817 March 27, 2023 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