EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

STATE / TERRITORY LEDGER

Louisiana drinking water system records

EPA compliance fields for active community water systems reporting at least 2,500 people served.

Systems313active CWS · pop. 2,500+
Population served4,773,633reported total; may overlap
Current violation flag29.1%91 systems
Serious-violator flag9.9%31 systems

01 / LARGEST SYSTEMS

Community water systems in Louisiana

Population served is a system-reported service figure. It is not a count of unique state residents.

Water systemPopulation servedPrimary sourceCurrent export status
Baton Rouge Water CompanyLA1033005596,844Ground waterNo current violation flagged
New Orleans Carrollton Water WorksLA1071009334,903Surface waterNo current violation flagged
E Jefferson Ww District 1LA1051001275,163Surface waterNo current violation flagged
City Of Shreveport Water SystemLA1017031192,378Surface waterCurrent serious-violator flag
Lafayette Utilities Water SystemLA1055017169,389Ground waterNo current violation flagged
W Jefferson Ww District 2LA1051004140,264Surface waterNo current violation flagged
Schriever Water Treatment Service AreaLA1109002116,460Surface waterNo current violation flagged
Lafourche Water District 1LA105700181,609Surface waterNo current violation flagged
City Of Bossier City Water SystemLA101500479,506Surface waterNo current violation flagged
City Of Lake Charles Water SystemLA101902979,500Ground waterNo current violation flagged
Ward Ii Water DistrictLA106303978,147Ground waterNo current violation flagged
Tangipahoa Parish Water DistrictLA110500875,873Ground waterNo current violation flagged
City Of Alexandria Water SystemLA107900166,798Ground waterNo current violation flagged
Lawco - New Iberia Water SystemLA104500959,928Ground waterNo current violation flagged
City Of Monroe Water SystemLA107303157,000Surface waterCurrent serious-violator flag
St Charles Parish Dept Of WaterworksLA108900152,879Surface waterNo current violation flagged
New Orleans Algiers Water WorksLA107100152,785Surface waterNo current violation flagged
St Bernard Parish WaterworksLA108700144,783Surface waterNo current violation flagged
Slidell Water SupplyLA110304135,547Ground waterNo current violation flagged
St John Water District 3LA109500731,965Ground waterNo current violation flagged
Zachary Water SystemLA103303031,569Ground waterNo current violation flagged
City Of Natchitoches Water SystemLA106900727,693Surface waterNo current violation flagged
City Of Denham Springs Water SystemLA106300425,725Ground waterNo current violation flagged
Sulphur City Of Water SystemLA101904424,489Ground waterNo current violation flagged
Vermilion Waterworks District 1LA111303424,132Ground waterNo current violation flagged
Beauregard Water Works Dist #3LA101100824,000Ground waterNo current violation flagged
City Of Ruston Water SystemLA106101722,468Ground waterNo current violation flagged
Assumption Parish Ww District 1LA100700121,366Surface waterNo current violation flagged
City Of Hammond Water SystemLA110500921,135Ground waterNo current violation flagged
Calcasieu Parish Ww District No 1LA101905120,837Ground waterNo current violation flagged
City Of Opelousas Water SystemLA109701020,388Ground waterNo current violation flagged
City Of Pineville Water SystemLA107901620,358Ground waterCurrent health-based flag
Rapides Parish Waterworks District 3LA107901719,983Surface waterNo current violation flagged
Belle Chasse Water DistrictLA107500119,644Surface waterNo current violation flagged
St Tam Parish- Bedico -Faubourg-CoquilleLA110314918,372Ground waterNo current violation flagged
Bastrop Water SystemLA106700318,105Ground waterCurrent serious-violator flag
Lawco - Crowley Water SystemLA100100217,733Ground waterNo current violation flagged
St Tam Parish - Briarwood TerraceLA110307917,536Ground waterOther current violation flag
Gretna WaterworksLA105100317,026Surface waterNo current violation flagged
Lpwdn North RegionLA105519116,833Ground water purchasedNo current violation flagged
City Of Gonzales Water SystemLA100503016,806Ground waterNo current violation flagged
Town Of Blanchard Water SystemLA101700616,326Surface waterNo current violation flagged
City Of Minden Water SystemLA111902116,281Ground waterNo current violation flagged
City Of Covington Water SupplyLA110301116,185Ground waterCurrent health-based flag
West Monroe Water SystemLA107305616,005Ground waterNo current violation flagged
Town Of Walker Water SystemLA106301715,813Ground waterNo current violation flagged
Lawco - Eunice Water SystemLA109702215,393Ground waterNo current violation flagged
Lpwd SouthLA105515615,132Ground water purchasedNo current violation flagged
Thibodaux WaterworksLA105700314,862Surface waterNo current violation flagged
East Feliciana Rural WaterLA103700414,829Ground waterNo current violation flagged
West Hwy 80 Ark Road WsLA107305514,649Ground waterNo current violation flagged
Calcasieu Parish Ww Dist 9 CarlyssLA101911614,502Ground waterNo current violation flagged
City Of Deridder Water SystemLA101100114,400Ground waterNo current violation flagged
City Of Abbeville Water SystemLA111300114,217Ground waterNo current violation flagged
City Of Plaquemine Water SystemLA104700514,043Ground waterNo current violation flagged
City Of Bogalusa Water SystemLA111700114,000Ground waterCurrent health-based flag
City Of Baker Water SystemLA103300313,855Ground waterNo current violation flagged
West Baton Rouge Water Works District 2LA112101813,437Ground waterNo current violation flagged
Gowc North Water SystemLA107312013,287Ground waterNo current violation flagged
Barksdale Afb Water SystemLA101502213,000Surface water purchasedNo current violation flagged
City Of Mandeville Water SupplyLA110302313,000Ground waterNo current violation flagged
Village Of Parks Water SystemLA109900812,801Ground waterCurrent serious-violator flag
City Of Morgan City Water SystemLA110100512,703Surface waterNo current violation flagged
Cecilia Water CorporationLA109900512,420Ground waterNo current violation flagged
Buckeye Water District 50LA107900412,078Ground waterNo current violation flagged
West Feliciana Consol Wwks District 13LA112501012,045Ground waterNo current violation flagged
Gowc East Water SystemLA107312111,742Ground waterNo current violation flagged
Houma Water Treatment Service AreaLA110900111,658Surface waterNo current violation flagged
City Of Carencro Water SystemLA105500511,301Ground waterCurrent health-based flag
Utilities Inc - North Park Water SupplyLA110312411,298Ground waterNo current violation flagged
Cheniere Drew North Water SystemLA107310011,280Ground waterNo current violation flagged
City Of Rayne Water SystemLA100100710,908Ground waterNo current violation flagged
Fort Polk South Water SystemLA111506510,902Ground waterNo current violation flagged
Village Water SystemLA101501810,890Ground waterCurrent health-based flag
Bayou Liberty Water AssociationLA110300510,791Ground waterNo current violation flagged
Southwest Ouachita Waterworks, IncLA107304710,725Ground waterCurrent serious-violator flag
Pointe Coupee Water Works District 1LA107704310,629Ground waterCurrent health-based flag
City Of Youngsville Water SystemLA105503510,614Ground waterNo current violation flagged
City Of Leesville Water SystemLA111501910,545Ground waterCurrent health-based flag
St John Water District 1LA109500310,484Surface waterNo current violation flagged
Port Sulphur Water DistrictLA107500610,308Surface waterNo current violation flagged
City Of Broussard Purchase Water SystemLA105519310,242Ground water purchasedNo current violation flagged
Milton Water SystemLA105504610,200Ground waterNo current violation flagged
Magnolia-Eden IslesLA110301310,155Ground waterNo current violation flagged
Bayou Teche Water WorksLA109900210,137Ground waterCurrent health-based flag
City Of Breaux Bridge Water SystemLA109900310,098Ground waterCurrent health-based flag
City Of Jennings Water SystemLA10530039,837Ground waterCurrent health-based flag
Jeff Davis Water And Sewer Commission 1LA10530149,780Ground waterCurrent monitoring/reporting flag
Parish Utilities Of AscensionLA10050359,732Surface waterCurrent health-based flag
Water & Sewer Commission 4 Of St MaryLA11010119,709Surface waterNo current violation flagged
Brownville Water SystemLA10730049,696Ground waterCurrent health-based flag
City Of Scott Water SystemLA10550269,696Ground water purchasedNo current violation flagged
Town Of Leonville Water SystemLA10970059,552Ground waterNo current violation flagged
Mire Branch Water CorporationLA10010249,480Ground waterNo current violation flagged
Fort Polk North Water SystemLA11150649,420Ground waterNo current violation flagged
Kiroli Darbonne WsLA10730209,210Ground waterNo current violation flagged
Town Of New Roads Water SystemLA10770269,024Ground waterCurrent monitoring/reporting flag
Town Of Livingston Water SystemLA10630138,946Ground waterNo current violation flagged
Iberia Water Works District 3 - CoteauLA10450028,775Ground waterNo current violation flagged
Wwks District 2 Of St HelenaLA10910078,772Ground waterNo current violation flagged

Showing the 100 largest systems by reported population served.

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