COUNTY WATER-SYSTEM LEDGER
Calcasieu Parish, Louisiana
EPA’s September 2026 export lists 14 active community water systems serving Calcasieu Parish, Louisiana, with 2 current-violation flags and 1 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Calcasieu Parish, Louisiana
EPA associates 14 covered systems with Calcasieu Parish, Louisiana; their reported population-served values total 189,411 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| City Of Lake Charles Water SystemLA1019029 | 79,500 | Ground water | No current violation flagged |
| Sulphur City Of Water SystemLA1019044 | 24,489 | Ground water | No current violation flagged |
| Calcasieu Parish Ww District No 1LA1019051 | 20,837 | Ground water | No current violation flagged |
| Calcasieu Parish Ww Dist 9 CarlyssLA1019116 | 14,502 | Ground water | No current violation flagged |
| Houston River Waterworks District 11LA1019119 | 6,915 | Ground water | No current violation flagged |
| Calcasieu Parish Ww District 8LA1019118 | 6,834 | Ground water | No current violation flagged |
| Lawco - Dequincy Water SystemLA1019008 | 5,370 | Ground water | No current violation flagged |
| Calcasieu Parish Ww District No 4LA1019053 | 5,340 | Ground water | Current serious-violator flag |
| Calcasieu Parish Ww District No 5LA1019084 | 5,088 | Ground water | No current violation flagged |
| Westlake City Of Water SystemLA1019054 | 4,858 | Ground water | Current health-based flag |
| Calcasieu Parish Ww District 7LA1019114 | 4,791 | Ground water | No current violation flagged |
| Town Of Vinton Water SystemLA1019048 | 4,101 | Ground water | No current violation flagged |
| Town Of Iowa Water SystemLA1019026 | 3,636 | Ground water | No current violation flagged |
| Calcasieu Ww #14 Ward 5LA1019042 | 3,150 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Calcasieu Parish, Louisiana
EPA classifies 14 systems serving Calcasieu Parish, Louisiana across 1 primary-source categories; Ground water is the largest category with 14 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.