Louisiana water providers

Find published drinking-water records, providers, and official agency resources for Louisiana. Review sources, sample dates, and coverage.

Official drinking-water resources

• Louisiana Department of Health - Safe Drinking Water Program
• Louisiana Department of Health Drinking Water Viewer

The responsible agency may differ for tribal systems. Record availability and sample dates vary by provider.

Community systems appear first. Sort: Population served · A–Z

Public water systems

1,227 systems in the imported directory. Includes community systems, schools, workplaces, and other public systems.

• Baton Rouge Water CompanyLA1033005 · CWS · Population served: 596,844
• New Orleans Carrollton Water WorksLA1071009 · CWS · Population served: 334,903
• E Jefferson Ww District 1LA1051001 · CWS · Population served: 275,163
• City of Shreveport Water SystemLA1017031 · CWS · Population served: 192,378
• Lafayette Utilities Water SystemLA1055017 · CWS · Population served: 169,389
• W Jefferson Ww District 2LA1051004 · CWS · Population served: 140,264
• Schriever Water Treatment Service AreaLA1109002 · CWS · Population served: 116,460
• Lafourche Water District 1LA1057001 · CWS · Population served: 81,609
• City of Bossier City Water SystemLA1015004 · CWS · Population served: 79,506
• City of Lake Charles Water SystemLA1019029 · CWS · Population served: 79,500
• Ward II Water DistrictLA1063039 · CWS · Population served: 78,147
• Tangipahoa Parish Water DistrictLA1105008 · CWS · Population served: 75,873
• City of Alexandria Water SystemLA1079001 · CWS · Population served: 66,798
• Lawco - New Iberia Water SystemLA1045009 · CWS · Population served: 59,928
• City of Monroe Water SystemLA1073031 · CWS · Population served: 57,000
• St Charles Parish Dept of WaterworksLA1089001 · CWS · Population served: 52,879
• New Orleans Algiers Water WorksLA1071001 · CWS · Population served: 52,785
• St Bernard Parish WaterworksLA1087001 · CWS · Population served: 44,783
• Slidell Water SupplyLA1103041 · CWS · Population served: 35,547
• St John Water District 3LA1095007 · CWS · Population served: 31,965
• Zachary Water SystemLA1033030 · CWS · Population served: 31,569
• City of Natchitoches Water SystemLA1069007 · CWS · Population served: 27,693
• City of Denham Springs Water SystemLA1063004 · CWS · Population served: 25,725
• Sulphur City of Water SystemLA1019044 · CWS · Population served: 24,489
• Vermilion Waterworks District 1LA1113034 · CWS · Population served: 24,132
• Beauregard Water Works Dist #3LA1011008 · CWS · Population served: 24,000
• City of Ruston Water SystemLA1061017 · CWS · Population served: 22,468
• Assumption Parish Ww District 1LA1007001 · CWS · Population served: 21,366
• City of Hammond Water SystemLA1105009 · CWS · Population served: 21,135
• Calcasieu Parish Ww District No 1LA1019051 · CWS · Population served: 20,837
• City of Opelousas Water SystemLA1097010 · CWS · Population served: 20,388
• City of Pineville Water SystemLA1079016 · CWS · Population served: 20,358
• Rapides Parish Waterworks District 3LA1079017 · CWS · Population served: 19,983
• Belle Chasse Water DistrictLA1075001 · CWS · Population served: 19,644
• St Tam Parish- Bedico -Faubourg-CoquilleLA1103149 · CWS · Population served: 18,372
• Bastrop Water SystemLA1067003 · CWS · Population served: 18,105
• Lawco - Crowley Water SystemLA1001002 · CWS · Population served: 17,733
• St Tam Parish - Briarwood TerraceLA1103079 · CWS · Population served: 17,536
• Gretna WaterworksLA1051003 · CWS · Population served: 17,026
• Lpwdn North RegionLA1055191 · CWS · Population served: 16,833
• City of Gonzales Water SystemLA1005030 · CWS · Population served: 16,806
• Town of Blanchard Water SystemLA1017006 · CWS · Population served: 16,326
• City of Minden Water SystemLA1119021 · CWS · Population served: 16,281
• City of Covington Water SupplyLA1103011 · CWS · Population served: 16,185
• West Monroe Water SystemLA1073056 · CWS · Population served: 16,005
• Town of Walker Water SystemLA1063017 · CWS · Population served: 15,813
• Lawco - Eunice Water SystemLA1097022 · CWS · Population served: 15,393
• Lpwd SouthLA1055156 · CWS · Population served: 15,132
• Thibodaux WaterworksLA1057003 · CWS · Population served: 14,862
• East Feliciana Rural WaterLA1037004 · CWS · Population served: 14,829
• West Hwy 80 Ark Road WsLA1073055 · CWS · Population served: 14,649
• Calcasieu Parish Ww Dist 9 CarlyssLA1019116 · CWS · Population served: 14,502
• City of Deridder Water SystemLA1011001 · CWS · Population served: 14,400
• City of Abbeville Water SystemLA1113001 · CWS · Population served: 14,217
• City of Plaquemine Water SystemLA1047005 · CWS · Population served: 14,043
• City of Bogalusa Water SystemLA1117001 · CWS · Population served: 14,000
• City of Baker Water SystemLA1033003 · CWS · Population served: 13,855
• West Baton Rouge Water Works District 2LA1121018 · CWS · Population served: 13,437
• Gowc North Water SystemLA1073120 · CWS · Population served: 13,287
• Barksdale Afb Water SystemLA1015022 · CWS · Population served: 13,000
• City of Mandeville Water SupplyLA1103023 · CWS · Population served: 13,000
• Village of Parks Water SystemLA1099008 · CWS · Population served: 12,801
• City of Morgan City Water SystemLA1101005 · CWS · Population served: 12,703
• Cecilia Water CorporationLA1099005 · CWS · Population served: 12,420
• Buckeye Water District 50LA1079004 · CWS · Population served: 12,078
• West Feliciana Consol Wwks District 13LA1125010 · CWS · Population served: 12,045
• Gowc East Water SystemLA1073121 · CWS · Population served: 11,742
• Houma Water Treatment Service AreaLA1109001 · CWS · Population served: 11,658
• City of Carencro Water SystemLA1055005 · CWS · Population served: 11,301
• Utilities Inc - North Park Water SupplyLA1103124 · CWS · Population served: 11,298
• Cheniere Drew North Water SystemLA1073100 · CWS · Population served: 11,280
• City of Rayne Water SystemLA1001007 · CWS · Population served: 10,908
• Fort Polk South Water SystemLA1115065 · CWS · Population served: 10,902
• Village Water SystemLA1015018 · CWS · Population served: 10,890
• Bayou Liberty Water AssociationLA1103005 · CWS · Population served: 10,791
• Southwest Ouachita Waterworks, IncLA1073047 · CWS · Population served: 10,725
• Pointe Coupee Water Works District 1LA1077043 · CWS · Population served: 10,629
• City of Youngsville Water SystemLA1055035 · CWS · Population served: 10,614
• City of Leesville Water SystemLA1115019 · CWS · Population served: 10,545
• St John Water District 1LA1095003 · CWS · Population served: 10,484
• Port Sulphur Water DistrictLA1075006 · CWS · Population served: 10,308
• City of Broussard Purchase Water SystemLA1055193 · CWS · Population served: 10,242
• Milton Water SystemLA1055046 · CWS · Population served: 10,200
• Magnolia-Eden IslesLA1103013 · CWS · Population served: 10,155
• Bayou Teche Water WorksLA1099002 · CWS · Population served: 10,137
• City of Breaux Bridge Water SystemLA1099003 · CWS · Population served: 10,098
• City of Jennings Water SystemLA1053003 · CWS · Population served: 9,837
• Jeff Davis Water And Sewer Commission 1LA1053014 · CWS · Population served: 9,780
• Parish Utilities of AscensionLA1005035 · CWS · Population served: 9,732
• Water & Sewer Commission 4 of St MaryLA1101011 · CWS · Population served: 9,709
• Brownville Water SystemLA1073004 · CWS · Population served: 9,696
• City of Scott Water SystemLA1055026 · CWS · Population served: 9,696
• Town of Leonville Water SystemLA1097005 · CWS · Population served: 9,552
• Mire Branch Water CorporationLA1001024 · CWS · Population served: 9,480
• Fort Polk North Water SystemLA1115064 · CWS · Population served: 9,420
• Kiroli Darbonne WsLA1073020 · CWS · Population served: 9,210
• Town of New Roads Water SystemLA1077026 · CWS · Population served: 9,024
• Town of Livingston Water SystemLA1063013 · CWS · Population served: 8,946
• Iberia Water Works District 3 - CoteauLA1045002 · CWS · Population served: 8,775
• Wwks District 2 of St HelenaLA1091007 · CWS · Population served: 8,772