County · Louisiana
Catahoula Parish, Louisiana: drinking water records
This overview covers 6 ZIP codes and 7 community water systems in Catahoula Parish. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Town of Jonesville Water System LA1025006 | 2,811 | 0 | 0 | 3 | 6 ppb |
| Black River Water System LA1025002 | 2,256 | 0 | 0 | 5 | 0 ppb |
| Village of Harrisonburg Water System LA1025004 | 1,530 | 0 | 0 | 11 | 2.7 ppb |
| Leland Water System INC LA1025007 | 1,140 | 0 | 0 | 3 | 0 ppb |
| Village of Sicily Island LA1025009 | 930 | 0 | 0 | 8 | 2 ppb |
| Maitland Water Works District LA1025011 | 900 | 0 | 0 | 4 | 1.1 ppb |
| Sandy Lake Water Supply LA1025008 | 3,141 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Catahoula Parish
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 71425.
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.