County · Louisiana
Jefferson Davis Parish, Louisiana: drinking water records
This overview covers 7 ZIP codes and 8 community water systems in Jefferson Davis Parish. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| City of Jennings Water System LA1053003 | 9,837 | 60 | 0 | 3 | 1 ppb |
| Town of Welsh Water System LA1053006 | 4,311 | 60 | 0 | 1 | 3 ppb |
| Jeff Davis Water and Sewer Commission 1 LA1053014 | 9,780 | 60 | 0 | 0 | 3 ppb |
| Jeff Davis Central Waterworks District LA1053012 | 5,709 | 60 | 0 | 0 | 4.2 ppb |
| Jeff Davis Water District 4 LA1053013 | 4,194 | 60 | 0 | 0 | 1.4 ppb |
| Town of Lake Arthur Water System LA1053005 | 2,706 | 120 | 0 | 0 | 0 ppb |
| Town of Elton Water System LA1053001 | 1,512 | 0 | 0 | 2 | 2 ppb |
| Village of Fenton Water System LA1053007 | 226 | 0 | 0 | 1 | 17 ppb |
ZIP reports in Jefferson Davis Parish
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.