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Employer directory · Louisiana

Public water systems in Louisiana

190 public water systems in Louisiana, 18th among the states. Community drinking-water systems owned by a local, state or federal government and serving 3,301 people or more, from EPA's Safe Drinking Water Information System. Private and tribal systems are not included.

Public water systemPopulation served
NEW ORLEANS CARROLLTON WATER WORKS334,903
E JEFFERSON WW DISTRICT 1275,163
CITY OF SHREVEPORT WATER SYSTEM192,378
LAFAYETTE UTILITIES WATER SYSTEM169,389
W JEFFERSON WW DISTRICT 2140,264
SCHRIEVER WATER TREATMENT SERVICE AREA116,460
LAFOURCHE WATER DISTRICT 181,609
CITY OF BOSSIER CITY WATER SYSTEM79,506
CITY OF LAKE CHARLES WATER SYSTEM79,500
WARD II WATER DISTRICT78,147
TANGIPAHOA PARISH WATER DISTRICT75,873
CITY OF ALEXANDRIA WATER SYSTEM66,798
CITY OF MONROE WATER SYSTEM57,000
ST CHARLES PARISH DEPT OF WATERWORKS52,879
NEW ORLEANS ALGIERS WATER WORKS52,785
ST BERNARD PARISH WATERWORKS44,783
SLIDELL WATER SUPPLY35,547
ST JOHN WATER DISTRICT 331,965
ZACHARY WATER SYSTEM31,569
CITY OF NATCHITOCHES WATER SYSTEM27,693
CITY OF DENHAM SPRINGS WATER SYSTEM25,725
SULPHUR CITY OF WATER SYSTEM24,489
VERMILION WATERWORKS DISTRICT 124,132
BEAUREGARD WATER WORKS DIST #324,000
CITY OF RUSTON WATER SYSTEM22,468
ASSUMPTION PARISH WW DISTRICT 121,366
CITY OF HAMMOND WATER SYSTEM21,135
CALCASIEU PARISH WW DISTRICT NO 120,837
CITY OF OPELOUSAS WATER SYSTEM20,388
CITY OF PINEVILLE WATER SYSTEM20,358
RAPIDES PARISH WATERWORKS DISTRICT 319,983
BELLE CHASSE WATER DISTRICT19,644
ST TAM PARISH- BEDICO -FAUBOURG-COQUILLE18,372
ST TAM PARISH - BRIARWOOD TERRACE17,536
GRETNA WATERWORKS17,026
LPWDN NORTH REGION16,833
CITY OF GONZALES WATER SYSTEM16,806
TOWN OF BLANCHARD WATER SYSTEM16,326
CITY OF MINDEN WATER SYSTEM16,281
CITY OF COVINGTON WATER SUPPLY16,185
WEST MONROE WATER SYSTEM16,005
TOWN OF WALKER WATER SYSTEM15,813
LPWD SOUTH15,132
THIBODAUX WATERWORKS14,862
EAST FELICIANA RURAL WATER14,829
CALCASIEU PARISH WW DIST 9 CARLYSS14,502
CITY OF DERIDDER WATER SYSTEM14,400
CITY OF ABBEVILLE WATER SYSTEM14,217
CITY OF PLAQUEMINE WATER SYSTEM14,043
CITY OF BOGALUSA WATER SYSTEM14,000
CITY OF BAKER WATER SYSTEM13,855
WEST BATON ROUGE WATER WORKS DISTRICT 213,437
BARKSDALE AFB WATER SYSTEM13,000
CITY OF MANDEVILLE WATER SUPPLY13,000
VILLAGE OF PARKS WATER SYSTEM12,801
CITY OF MORGAN CITY WATER SYSTEM12,703
BUCKEYE WATER DISTRICT 5012,078
WEST FELICIANA CONSOL WWKS DISTRICT 1312,045
HOUMA WATER TREATMENT SERVICE AREA11,658
CITY OF CARENCRO WATER SYSTEM11,301
CITY OF RAYNE WATER SYSTEM10,908
FORT POLK SOUTH WATER SYSTEM10,902
VILLAGE WATER SYSTEM10,890
POINTE COUPEE WATER WORKS DISTRICT 110,629
CITY OF YOUNGSVILLE WATER SYSTEM10,614
CITY OF LEESVILLE WATER SYSTEM10,545
ST JOHN WATER DISTRICT 110,484
PORT SULPHUR WATER DISTRICT10,308
CITY OF BROUSSARD PURCHASE WATER SYSTEM10,242
CITY OF BREAUX BRIDGE WATER SYSTEM10,098
CITY OF JENNINGS WATER SYSTEM9,837
JEFF DAVIS WATER AND SEWER COMMISSION 19,780
PARISH UTILITIES OF ASCENSION9,732
WATER & SEWER COMMISSION 4 OF ST MARY9,709
CITY OF SCOTT WATER SYSTEM9,696
TOWN OF LEONVILLE WATER SYSTEM9,552
FORT POLK NORTH WATER SYSTEM9,420
TOWN OF NEW ROADS WATER SYSTEM9,024
TOWN OF LIVINGSTON WATER SYSTEM8,946
IBERIA WATER WORKS DISTRICT 3 - COTEAU8,775
WWKS DISTRICT 2 OF ST HELENA8,772
TALLULAH WATER SYSTEM8,601
WESTWEGO WATERWORKS8,534
CITY OF PATTERSON WATER SYSTEM8,456
NATCHITOCHES PARISH WWKS DISTRICT 28,415
CITY OF FRANKLIN WATER SUPPLY8,325
SOUTHWEST ALLEN WW DISTRICT NO 28,106
ST TAM PARISH - CROSS GATES SD8,037
TOWN OF BENTON WATER SYSTEM8,037
ST MARY WATER & SEWER COMM #37,828
SPRINGHILL WATER SYSTEM7,800
CITY OF YOUNGSVILLE PURCHASE WS7,623
CITY OF MARKSVILLE WATER SYSTEM7,593
WINNSBORO WATER SYSTEM7,518
ST JAMES WATER DISTRICT 27,513
CITY OF MANSFIELD WATER SYSTEM7,512
TOWN OF ALBANY WATER SYSTEM7,305
CITY OF ST MARTINVILLE WATER SYSTEM7,263
ST JAMES WATER DISTRICT 17,200
CITY OF WINNFIELD WATER SYSTEM7,194
DESOTO PARISH WATER WORKS DISTRICT 17,173
SABINE PARISH WATER DISTRICT 16,924
CONCORDIA WATERWORKS DISTRICT 16,921
HOUSTON RIVER WATERWORKS DISTRICT 116,915
CALCASIEU PARISH WW DISTRICT 86,834
SOUTHEAST WATERWORKS DISTRICT 26,810
CITY OF PORT ALLEN WATER SYSTEM6,759
EBARB WWKS DIST # 1 - AIMWELL AREA6,738
CITY OF PONTCHATOULA WATER SYSTEM6,657
EAST IBERVILLE WATER SYSTEM6,657
BEAUREGARD DISTRICT NO 2 WARD NO 56,613
CITY OF VILLE PLATTE WATER SYSTEM6,590
INTRACOASTAL WATER SYSTEM WEST6,489
LOUISIANA STATE PENITENTIARY6,362
TOWN OF VIDALIA WATER SYSTEM6,354
TOWN OF JONESBORO WATER SYSTEM6,231
CADEVILLE WATER DISTRICT6,219
CITY OF JEANERETTE WATER SYSTEM6,189
CITY OF OAKDALE WATER SYSTEM6,114
GRAMBLING STATE UNIVERSITY WS6,000
CITY OF LAKE PROVIDENCE WATER SYSTEM5,850
WATERWORKS DISTRICT 75,817
JEFF DAVIS CENTRAL WATERWORKS DISTRICT5,709
WBR DISTRICT 4 -SECTION ROAD WINTERVILLE5,571
ST MARY PARISH W&S #2 BAYOU VISTA5,379
TOWN OF HAUGHTON WATER SYSTEM5,355
TOWN OF FARMERVILLE WATER SYSTEM5,352
CALCASIEU PARISH WW DISTRICT NO 45,340
VERNON PARISH WATER AND SEWER COMMISSION5,295
VILLAGE OF TURKEY CREEK WATER SYSTEM5,289
TOWN OF GREENWOOD WATER SYSTEM5,205
TOWN OF BUNKIE WATER SYSTEM5,169
CITY OF BROUSSARD WATER SYSTEM5,151
CALCASIEU PARISH WW DISTRICT NO 55,088
CITY OF BERWICK5,024
KOLIN RUBY WISE WATERWORK DISTRICT 11 A4,992
TOWN OF GRAMBLING WATER SYSTEM4,949
PINEHILL WATERWORKS DISTRICT4,926
WESTLAKE CITY OF WATER SYSTEM4,858
TOWN OF RAYVILLE WATER SYSTEM4,842
FOURTH WARD WATER WORKS4,839
TOWN OF WOODWORTH WATER SYSTEM4,818
CALCASIEU PARISH WW DISTRICT 74,791
TOWN OF LUTCHER WATERWORKS4,781
ST LANDRY WATER WORKS DISTRICT 2 RURAL4,761
TOWN OF MAMOU WATER SYSTEM4,559
COLYELL COMMUNITY WATER4,544
TOWN OF HOMER WATER SYSTEM4,524
TOWN OF MANY WATER SYSTEM4,428
WEST VERNON PARISH WATERWORKS DISTRICT4,365
TOWN OF SUNSET WATER SYSTEM4,356
CITY OF KAPLAN WATER SYSTEM4,340
WBR PUBLIC UTILITIES4,329
TOWN OF WELSH WATER SYSTEM4,311
TOWN OF AMITE WATER SYSTEM4,300
VILLAGE OF PLAUCHEVILLE WATER SYSTEM4,233
VARNADO WATER WORKS4,230
BOGUE-LUSA WATER WORKS DISTRICT4,200
JEFF DAVIS WATER DISTRICT 44,194
CITY OF BROUSSARD HWY 90 WATER SYSTEM4,182
TOWN OF CHURCH POINT WATER SYSTEM4,176
TOWN OF FRANKLINTON WATER SYSTEM4,150
TOWN OF ARCADIA WATER SYSTEM4,146
LPWD NORTH PRODUCTION FACILITY4,122
TANGIPAHOA (SECOND WARD) WATER DISTRICT4,112
TOWN OF VINTON WATER SYSTEM4,101
SOUTH VERNON PARISH WATERWORKS DISTRICT4,083
WESLEY CHAPEL WATER SYSTEM4,080
TOWN OF DELHI WATER SUPPLY4,071
TOWN OF VIVIAN WATER SYSTEM4,050
LPWDN SOUTH REGION4,032
TOWN OF ARNAUDVILLE WATER SYSTEM3,957
AVOYELLES PARISH WATERWORKS DISTRICT 13,900
TOWN OF PORT BARRE WATER SYSTEM3,828
TOWN OF FERRIDAY WATER SYSTEM3,816
AVOYELLES WARD ONE WATER SYSTEM INC3,726
LAWTELL WATER WORKS DISTRICT NO 13,717
ST JOHN WATER DISTRICT 23,702
TOWN OF ABITA SPRINGS WATER SYSTEM3,693
TOWN OF IOWA WATER SYSTEM3,636
TOWN OF JENA WATER SYSTEM3,614
TOWN OF HAYNESVILLE WATER SYSTEM3,600
VILLAGE OF FOREST HILL3,600
WEST ALLEN PARISH WATER SYSTEM3,582
CAMERON PARISH WW DISTRICT 11-SWEET LAKE3,507
CONSOLIDATED WATERWORKS DISTRICT 23,498
RURAL FRANKLINTON WATER3,450
TOWN OF MAURICE WATER SYSTEM3,450
GREATER WARD 1 WATERWORKS DISTRICT3,333
TOWN OF PEARL RIVER3,333

Largest first by population served, as each employer reports it to its federal registry.

Source: U.S. Environmental Protection Agency, Safe Drinking Water Information System (SDWIS/Fed), community water systems. Data captured October 2, 2026.

Jobs at public water systems

Water / Wastewater Treatment Operator

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Public water systems in other states

Texas · 1,133California · 523Illinois · 408Alabama · 294Florida · 286Michigan · 284Tennessee · 276New York · 266Pennsylvania · 259Massachusetts · 254Ohio · 243Georgia · 242North Carolina · 237Washington · 211New Jersey · 205Missouri · 200Kentucky · 190Minnesota · 185Wisconsin · 185Indiana · 176Colorado · 167Arkansas · 157South Carolina · 143Oklahoma · 142Virginia · 142Utah · 116Iowa · 112Oregon · 111Mississippi · 107Kansas · 88West Virginia · 82Maryland · 69Arizona · 63New Mexico · 53Idaho · 43Nebraska · 43New Hampshire · 38Hawaii · 34Montana · 32Vermont · 32Maine · 31South Dakota · 31Connecticut · 30Nevada · 28Wyoming · 28Rhode Island · 26Delaware · 20North Dakota · 18Alaska · 16District of Columbia · 3

All public water systems in the U.S. · Louisiana government jobs