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Public water system record

City of Opelousas Water System

Serves Opelousas, St. Landry Parish, LA · 20,388 people served

Federal records show 7 health-based violations and 3 monitoring/reporting issues for City of Opelousas Water System in the last ten years, including an unresolved Groundwater Rule violation.

  • LA1097010
  • OPELOUSAS
  • LA
  • 20,388 served

System profile

Source water Groundwater
ZIP 70571
EPA system ID LA1097010

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
3
Unresolved
4
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • City of Opelousas Water System draws water from 6 wells.
  • Most recent formal enforcement: compliance order (no penalty) by Louisiana, August 2022.
  • Record on file since 1994, with 12 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 5,731 unknown out of 6,503 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Groundwater Rule
Treatment technique failure
 140 Apr 2, 2025 Active No
Groundwater Rule
Treatment technique failure
 140 Jun 4, 2024 Resolved No
Groundwater Rule
Treatment technique failure
 140 Oct 27, 2021 Resolved No
Groundwater Rule
Treatment technique failure
 140 Oct 27, 2021 Active
Enforcement action in place
 No
Groundwater Rule
Treatment technique failure
 140 Oct 27, 2021 Active
Enforcement action in place
 No
Groundwater Rule
Treatment technique failure
 140 Oct 27, 2021 Resolved No
Groundwater Rule
Treatment technique failure
 140 Aug 22, 2019 Active
Enforcement action in place
 No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Public Notice
OTHER
 Jul 17, 2024 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jun 8, 2018 Resolved

Full record since 1994

EPA's records for City of Opelousas Water System go back to 1994. Before October 19, 2016 they list 12 health-based violations (1 resolved, 11 archived by EPA without a recorded fix) and 8 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 5 1
2000s 6 2
2010 to October 18, 2016 1 5
October 19, 2016 to 2019 1 1
2020s 6 2

Most recent health-based violation before October 19, 2016: Total Coliform, began August 2013, Resolved.

Show all 12 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Aug 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 2008 Archived
Total Coliform
Contaminant limit exceeded
 Jul 1, 2003 Archived
Total Coliform
Contaminant limit exceeded
 Jul 1, 2002 Archived
Total Coliform
Contaminant limit exceeded
 Jun 1, 2002 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 2001 Archived
Total Coliform
Contaminant limit exceeded
 Jun 1, 2001 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1999 Archived
Total Coliform
Contaminant limit exceeded
 Feb 1, 1996 Archived
Total Coliform
Contaminant limit exceeded
 Oct 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1994 Archived

Enforcement actions

Louisiana regulators took 1 formal enforcement action against City of Opelousas Water System in 2022. The most recent was a compliance order (no penalty) in August 2022.

Date By Action Violations covered
Aug 10, 2022 Louisiana Compliance order (no penalty) 6 violations (5 health-based): Groundwater Rule, Lead and Copper Rule

What the violations mean

Groundwater Rule

7 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Where the water comes from

City of Opelousas Water System draws water from 6 wells.

Annual water quality report

City of Opelousas Water System must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Louisiana.

Certified drinking water labs by state EPA guidance for private wells