County · Louisiana
Calcasieu Parish, Louisiana: drinking water records
This overview covers 14 ZIP codes and 37 community water systems in Calcasieu 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 |
|---|---|---|---|---|---|
| Sulphur City of Water System LA1019044 | 24,489 | 120 | 0 | 1 | 2 ppb |
| Houston River Waterworks District 11 LA1019119 | 6,915 | 60 | 0 | 1 | 2 ppb |
| Calcasieu Parish Ww District No 4 LA1019053 | 5,340 | 60 | 0 | 7 | 2 ppb |
| Westlake City of Water System LA1019054 | 4,858 | 180 | 0 | 4 | 1 ppb |
| City of Lake Charles Water System LA1019029 | 79,500 | 360 | 0 | 0 | 0.8 ppb |
| Calcasieu Parish Ww District No 1 LA1019051 | 20,837 | 120 | 0 | 0 | 2 ppb |
| Calcasieu Parish Ww Dist 9 Carlyss LA1019116 | 14,502 | 60 | 0 | 0 | 0 ppb |
| Calcasieu Parish Ww District 8 LA1019118 | 6,834 | 120 | 0 | 0 | 4 ppb |
| Lawco - Dequincy Water System LA1019008 | 5,370 | 120 | 0 | 0 | 0.6 ppb |
| Calcasieu Parish Ww District No 5 LA1019084 | 5,088 | 60 | 0 | 0 | 4 ppb |
| Calcasieu Parish Ww District 7 LA1019114 | 4,791 | 60 | 0 | 0 | 0 ppb |
| Town of Vinton Water System LA1019048 | 4,101 | 60 | 0 | 0 | 3 ppb |
| Town of Iowa Water System LA1019026 | 3,636 | 60 | 0 | 0 | 0 ppb |
| Gulf Stream Manor Water System LA1019123 | 1,368 | 0 | 0 | 15 | 0 ppb |
| Fairview Mobile Estates North Ws LA1019080 | 669 | 0 | 0 | 2 | 0 ppb |
| Fairview Mobile Estates South Ws LA1019096 | 378 | 0 | 0 | 1 | 1.7 ppb |
| Sugarcane Townes Water System LA1019131 | 288 | 0 | 0 | 1 | 1.2 ppb |
| C K B Trailer Park Water System LA1019059 | 150 | 0 | 0 | 1 | 0 ppb |
| Clearview Mobile Home Park LA1019122 | 141 | 0 | 0 | 1 | 2 ppb |
| Calcasieu Ww #14 Ward 5 LA1019042 | 3,150 | 0 | 0 | 0 | 0 ppb |
| Calcasieu Parish Ww 12 Ward 3 LA1019126 | 2,130 | 0 | 0 | 0 | 0 ppb |
| Quail Ridge Estates Water System LA1019105 | 1,119 | 0 | 0 | 0 | 0 ppb |
| Waterworks Dist. No. 10 of Ward 7 LA1019128 | 942 | 0 | 0 | 0 | 0 ppb |
| Country Pines North Subdivision Ws LA1019083 | 936 | 0 | 0 | 0 | 0 ppb |
| Mossville Ww District No 2 LA1019052 | 618 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Calcasieu 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.