St. Landry Parish County tap water
0 of 11 water systems serving St. Landry Parish County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 28 community water systems list this county as served; 11 serve 3,300+ people with full PFAS testing.
- 12 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| City of Opelousas Water System | Groundwater | 20,388 | No | 6 |
| Lawco - Eunice Water System | Groundwater | 15,471 | No | 0 |
| Town of Leonville Water System | Groundwater | 9,552 | No | 0 |
| Lewisburg Bellevue Water System | Groundwater | 8,325 | No | 0 |
| Savoy Swords Water System Inc | Groundwater | 7,326 | No | 2 |
| Plaisance Water System | Groundwater | 6,465 | No | 0 |
| Prairie Ronde Water System Inc | Groundwater | 6,105 | No | 0 |
| St Landry Water Works District 2 Rural | Groundwater | 4,761 | No | 0 |
| Town of Sunset Water System | Groundwater | 4,356 | No | 0 |
| Town of Port Barre Water System | Groundwater | 3,828 | No | 0 |
| Lawtell Water Works District No 1 | Groundwater | 3,717 | No | 1 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.