U.S. water systems

Louisiana Water Systems

Louisiana

2,224 community water systems on record — 908 active, 1,316 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Louisiana’s official records. Always confirm current status with Louisiana before making decisions based on this information.

Counties in Louisiana

Acadia Parish County (27)Allen Parish County (11)Ascension Parish County (199)Assumption Parish County (1)Avoyelles Parish County (21)Beauregard Parish County (9)Bienville Parish County (23)Bossier Parish County (49)Caddo Parish County (85)Calcasieu Parish County (117)Caldwell Parish County (11)Cameron Parish County (11)Catahoula Parish County (9)Claiborne Parish County (13)Concordia Parish County (11)De Soto Parish County (27)East Baton Rouge Parish County (33)East Carroll Parish County (6)East Feliciana Parish County (17)Evangeline Parish County (17)Franklin Parish County (12)Grant Parish County (19)Iberia Parish County (39)Iberville Parish County (29)Jackson Parish County (33)Jefferson Davis Parish County (13)Jefferson Parish County (5)La Salle Parish County (18)Lafayette Parish County (192)Lafourche Parish County (3)Lincoln Parish County (32)Livingston Parish County (113)Madison Parish County (4)Morehouse Parish County (23)Natchitoches Parish County (15)Orleans Parish County (3)Ouachita Parish County (114)Plaquemines Parish County (5)Pointe Coupee Parish County (44)Rapides Parish County (37)Red River Parish County (12)Richland Parish County (15)Sabine Parish County (52)St. Bernard Parish County (2)St. Charles Parish County (2)St. Helena Parish County (9)St. James Parish County (5)St. John the Baptist Parish County (8)St. Landry Parish County (35)St. Martin Parish County (29)St. Mary Parish County (14)St. Tammany Parish County (187)Tangipahoa Parish County (92)Tensas Parish County (8)Terrebonne Parish County (4)Union Parish County (25)Vermilion Parish County (33)Vernon Parish County (108)Washington Parish County (25)Webster Parish County (35)West Baton Rouge Parish County (26)West Carroll Parish County (7)West Feliciana Parish County (7)Winn Parish County (24)

All community water systems in Louisiana

System name	Mailing city	Population served	Status
BATON ROUGE WATER COMPANY	BATON ROUGE	596,844	Active
NEW ORLEANS CARROLLTON WATER WORKS	NEW ORLEANS	334,903	Active
E JEFFERSON WW DISTRICT 1	JEFFERSON	275,163	Active
CITY OF SHREVEPORT WATER SYSTEM	SHREVEPORT	192,378	Active
LAFAYETTE UTILITIES WATER SYSTEM	LAFAYETTE	169,389	Active
PARISH WATER COMPANY	BATON ROUGE	166,611	Inactive
W JEFFERSON WW DISTRICT 2	JEFFERSON	140,264	Active
SCHRIEVER WATER TREATMENT SERVICE AREA	HOUMA	116,460	Active
LAFOURCHE WATER DISTRICT 1	LOCKPORT	81,609	Active
CITY OF BOSSIER CITY WATER SYSTEM	BOSSIER CITY	79,506	Active
CITY OF LAKE CHARLES WATER SYSTEM	LAKE CHARLES	79,500	Active
WARD II WATER DISTRICT	DENHAM SPRINGS	78,147	Active
TANGIPAHOA PARISH WATER DISTRICT	NATALBANY	75,873	Active
CITY OF ALEXANDRIA WATER SYSTEM	ALEXANDRIA	66,798	Active
LAWCO - NEW IBERIA WATER SYSTEM	BATON ROUGE	59,928	Active
CITY OF MONROE WATER SYSTEM	MONROE	57,000	Active
ST CHARLES PARISH DEPT OF WATERWORKS	LULING	52,879	Active
NEW ORLEANS ALGIERS WATER WORKS	NEW ORLEANS	52,785	Active
ST BERNARD PARISH WATERWORKS	CHALMETTE	44,783	Active
TERREBONNE DIST NO 2	HOUMA	37,000	Inactive
SLIDELL WATER SUPPLY	SLIDELL	35,547	Active
ST JOHN WATER DISTRICT 3	LAPLACE	31,965	Active
ZACHARY WATER SYSTEM	ZACHARY	31,569	Active
ST CHARLES WATER DISTRICT 2 WEST BANK	LULING	31,485	Inactive
CITY OF NATCHITOCHES WATER SYSTEM	NATCHITOCHES	27,693	Active
CITY OF DENHAM SPRINGS WATER SYSTEM	DENHAM SPRINGS	25,725	Active
SULPHUR CITY OF WATER SYSTEM	SULPHUR	24,489	Active
VERMILION WATERWORKS DISTRICT 1	MAURICE	24,132	Active
BEAUREGARD WATER WORKS DIST #3	LONGVILLE	24,000	Active
CITY OF RUSTON WATER SYSTEM	RUSTON	22,468	Active
ASSUMPTION PARISH WW DISTRICT 1	NAPOLEONVILLE	21,366	Active
CITY OF HAMMOND WATER SYSTEM	HAMMOND	21,135	Active
CALCASIEU PARISH WW DISTRICT NO 1	LAKE CHARLES	20,837	Active
CITY OF OPELOUSAS WATER SYSTEM	OPELOUSAS	20,388	Active
CITY OF PINEVILLE WATER SYSTEM	PINEVILLE	20,358	Active
DISTRICT 1 TEST SYSTEM	BATON ROUGE	20,000	Inactive
RAPIDES PARISH WATERWORKS DISTRICT 3	TIOGA	19,983	Active
BELLE CHASSE WATER DISTRICT	BELLE CHASSE	19,644	Active
ST TAM PARISH- BEDICO -FAUBOURG-COQUILLE	COVINGTON	18,372	Active
BASTROP WATER SYSTEM	BASTROP	18,105	Active
LAWCO - CROWLEY WATER SYSTEM	BATON ROUGE	17,733	Active
ST TAM PARISH - BRIARWOOD TERRACE	COVINGTON	17,536	Active
GRETNA WATERWORKS	GRETNA	17,026	Active
LPWDN NORTH REGION	LAFAYETTE	16,833	Active
CITY OF GONZALES WATER SYSTEM	GONZALES	16,806	Active
TOWN OF BLANCHARD WATER SYSTEM	BLANCHARD	16,326	Active
CITY OF MINDEN WATER SYSTEM	MINDEN	16,281	Active
CITY OF COVINGTON WATER SUPPLY	COVINGTON	16,185	Active
WEST MONROE WATER SYSTEM	WEST MONROE	16,005	Active
TOWN OF WALKER WATER SYSTEM	WALKER	15,813	Active
LAWCO - EUNICE WATER SYSTEM	BATON ROUGE	15,393	Active
LPWD SOUTH	DUSON	15,132	Active
THIBODAUX WATERWORKS	THIBODAUX	14,862	Active
EAST FELICIANA RURAL WATER	ETHEL	14,829	Active
WEST HWY 80 ARK ROAD WS	WEST MONROE	14,649	Active
CALCASIEU PARISH WW DIST 9 CARLYSS	SULPHUR	14,502	Active
CITY OF DERIDDER WATER SYSTEM	DERIDDER	14,400	Active
CITY OF ABBEVILLE WATER SYSTEM	ABBEVILLE	14,217	Active
CITY OF PLAQUEMINE WATER SYSTEM	PLAQUEMINE	14,043	Active
CITY OF BOGALUSA WATER SYSTEM	BOGALUSA	14,000	Active
CITY OF BAKER WATER SYSTEM	BAKER	13,855	Active
WEST BATON ROUGE WATER WORKS DISTRICT 2	PORT ALLEN	13,437	Active
GOWC NORTH WATER SYSTEM	WEST MONROE	13,287	Active
BARKSDALE AFB WATER SYSTEM	BARKSDALE AFB	13,000	Active
CITY OF MANDEVILLE WATER SUPPLY	MANDEVILLE	13,000	Active
VILLAGE OF PARKS WATER SYSTEM	PARKS	12,801	Active
CITY OF MORGAN CITY WATER SYSTEM	MORGAN CITY	12,703	Active
CECILIA WATER CORPORATION	CECILIA	12,420	Active
BUCKEYE WATER DISTRICT 50	DEVILLE	12,078	Active
WEST FELICIANA CONSOL WWKS DISTRICT 13	ST. FRANCISVILLE	12,045	Active
GOWC EAST WATER SYSTEM	WEST MONROE	11,742	Active
HOUMA WATER TREATMENT SERVICE AREA	HOUMA	11,658	Active
CITY OF CARENCRO WATER SYSTEM	CARENCRO	11,301	Active
UTILITIES INC - NORTH PARK WATER SUPPLY	MANDEVILLE	11,298	Active
CHENIERE DREW NORTH WATER SYSTEM	WEST MONROE	11,280	Active
CITY OF RAYNE WATER SYSTEM	RAYNE	10,908	Active
ST.BERNARD WATER WORKS DIST.#2	ST BERNARD	10,904	Inactive
FORT POLK SOUTH WATER SYSTEM	FORT POLK	10,902	Active
VILLAGE WATER SYSTEM	BENTON	10,890	Active
WATERWORKS DISTRICT #4	SHREVEPORT	10,800	Inactive
BAYOU LIBERTY WATER ASSOCIATION	SLIDELL	10,791	Active
SOUTHWEST OUACHITA WATERWORKS, INC	WEST MONROE	10,725	Active
POINTE COUPEE WATER WORKS DISTRICT 1	NEW ROADS	10,629	Active
CITY OF YOUNGSVILLE WATER SYSTEM	YOUNGSVILLE	10,614	Active
CITY OF LEESVILLE WATER SYSTEM	LEESVILLE	10,545	Active
ST JOHN WATER DISTRICT 1	LAPLACE	10,484	Active
PORT SULPHUR WATER DISTRICT	BELLE CHASSE	10,308	Active
CITY OF BROUSSARD PURCHASE WATER SYSTEM	BROUSSARD	10,242	Active
MILTON WATER SYSTEM	MILTON	10,200	Active
MAGNOLIA-EDEN ISLES	DES PERES	10,155	Active
BAYOU TECHE WATER WORKS	LOREAUVILLE	10,137	Active
CITY OF BREAUX BRIDGE WATER SYSTEM	BREAUX BRIDGE	10,098	Active
PARISH WATER COMPANY	BATON ROUGE	10,052	Inactive
TEST WATER SYSTEM KATE	—	10,000	Inactive
CITY OF JENNINGS WATER SYSTEM	JENNINGS	9,837	Active
JEFF DAVIS WATER AND SEWER COMMISSION 1	LAKE ARTHUR	9,780	Active
PARISH UTILITIES OF ASCENSION	DONALDSONVILLE	9,732	Active
WATER & SEWER COMMISSION 4 OF ST MARY	CHARENTON	9,709	Active
BROWNVILLE WATER SYSTEM	WEST MONROE	9,696	Active
CITY OF SCOTT WATER SYSTEM	SCOTT	9,696	Active
TOWN OF LEONVILLE WATER SYSTEM	LEONVILLE	9,552	Active
MIRE BRANCH WATER CORPORATION	CHURCH POINT	9,480	Active
FORT POLK NORTH WATER SYSTEM	FORT POLK	9,420	Active
KIROLI DARBONNE WS	WEST MONROE	9,210	Active
TOWN OF NEW ROADS WATER SYSTEM	NEW ROADS	9,024	Active
TOWN OF LIVINGSTON WATER SYSTEM	LIVINGSTON	8,946	Active
IBERIA WATER WORKS DISTRICT 3 - COTEAU	NEW IBERIA	8,775	Active
WWKS DISTRICT 2 OF ST HELENA	GREENSBURG	8,772	Active
MAGNOLIA PLANTATION WATER SYSTEM INC	ABBEVILLE	8,769	Active
TALLULAH WATER SYSTEM	TALLULAH	8,601	Active
WESTWEGO WATERWORKS	WESTWEGO	8,534	Active
CITY OF PATTERSON WATER SYSTEM	PATTERSON	8,456	Active
NATCHITOCHES PARISH WWKS DISTRICT 2	NATCHEZ	8,415	Active
CITY OF FRANKLIN WATER SUPPLY	FRANKLIN	8,325	Active
LEWISBURG BELLEVUE WATER SYSTEM	OPELOUSAS	8,226	Active
SOUTHWEST ALLEN WW DISTRICT NO 2	KINDER	8,106	Active
ST TAM PARISH - CROSS GATES SD	COVINGTON	8,037	Active
TOWN OF BENTON WATER SYSTEM	BENTON	8,037	Active
MAGNOLIA-GREENLEAVES	DES PERES	8,031	Active
NORTH FRANKLIN WATER WORKS	CROWVILLE	7,989	Active
ST MARY WATER & SEWER COMM #3	CENTERVILLE	7,828	Active
SPRINGHILL WATER SYSTEM	SPRINGHILL	7,800	Active
LEE ROAD WATER CORPORATION	COVINGTON	7,665	Active
CITY OF YOUNGSVILLE PURCHASE WS	YOUNGSVILLE	7,623	Active
NORTH DESOTO WATER SYSTEM	STONEWALL	7,608	Active
CITY OF MARKSVILLE WATER SYSTEM	MARKSVILLE	7,593	Active
WINNSBORO WATER SYSTEM	WINNSBORO	7,518	Active
ST JAMES WATER DISTRICT 2	CONVENT	7,513	Active
CITY OF MANSFIELD WATER SYSTEM	MANSFIELD	7,512	Active
TERREBONNE DIST NO 3	HOUMA	7,500	Inactive
SOUTH MONROE WS GOWC	WEST MONROE	7,335	Active
SAVOY SWORDS WATER SYSTEM INC	EUNICE	7,326	Active
TOWN OF ALBANY WATER SYSTEM	ALBANY	7,305	Active
TEST SDWIS SYSTEM	BATON ROUGE	7,300	Inactive
CITY OF ST MARTINVILLE WATER SYSTEM	ST. MARTINVILLE	7,263	Active
ST JAMES WATER DISTRICT 1	CONVENT	7,200	Active
CITY OF WINNFIELD WATER SYSTEM	WINNFIELD	7,194	Active
DESOTO PARISH WATER WORKS DISTRICT 1	MANSFIELD	7,173	Active
SABINE PARISH WATER DISTRICT 1	MANY	6,924	Active
CONCORDIA WATERWORKS DISTRICT 1	FERRIDAY	6,921	Active
HOUSTON RIVER WATERWORKS DISTRICT 11	SULPHUR	6,915	Active
MAGNOLIA-RESOLVE WHISPERWOOD	DES PERES	6,867	Active
CALCASIEU PARISH WW DISTRICT 8	LAKE CHARLES	6,834	Active
SOUTHEAST WATERWORKS DISTRICT 2	ABBEVILLE	6,810	Active
CITY OF PORT ALLEN WATER SYSTEM	PORT ALLEN	6,759	Active
EBARB WWKS DIST # 1 - AIMWELL AREA	ZWOLLE	6,738	Active
CONSOLIDATED WATERWORKS DIST 1	GARYVILLE	6,664	Inactive
CITY OF PONTCHATOULA WATER SYSTEM	PONCHATOULA	6,657	Active
EAST IBERVILLE WATER SYSTEM	PLAQUEMINE	6,657	Active
BEAUREGARD DISTRICT NO 2 WARD NO 5	SINGER	6,613	Active
CITY OF VILLE PLATTE WATER SYSTEM	VILLE PLATTE	6,590	Active
INTRACOASTAL WATER SYSTEM WEST	PLAQUEMINE	6,489	Active
PLAISANCE WATER SYSTEM	OPELOUSAS	6,465	Active
EAST CENTRAL VERNON WATER SYSTEM	SLAGLE	6,363	Active
LOUISIANA STATE PENITENTIARY	ANGOLA	6,362	Active
TOWN OF VIDALIA WATER SYSTEM	VIDALIA	6,354	Active
UTILITIES INC - KINGSPOINT SUBDIVISION	MANDEVILLE	6,351	Active
TOWN OF JONESBORO WATER SYSTEM	JONESBORO	6,231	Active
CADEVILLE WATER DISTRICT	WEST MONROE	6,219	Active
CITY OF JEANERETTE WATER SYSTEM	JEANERETTE	6,189	Active
CITY OF OAKDALE WATER SYSTEM	OAKDALE	6,114	Active
PRAIRIE RONDE WATER SYSTEM INC	LAWTELL	6,090	Active
GRAMBLING STATE UNIVERSITY WS	GRAMBLING	6,000	Active
SOUTH TOLEDO BEND WATER DISTRICT	MANY	5,943	Active
CITY OF LAKE PROVIDENCE WATER SYSTEM	LAKE PROVIDENCE	5,850	Active
WATERWORKS DISTRICT 7	KEITHVILLE	5,817	Active
MAGNOLIA - TOWN & COUNTRY SERVICE	DES PERES	5,715	Active
JEFF DAVIS CENTRAL WATERWORKS DISTRICT	WELSH	5,709	Active
FIFTH WARD WATER SYSTEM	MARKSVILLE	5,676	Active
RAPIDES ISLAND WATER ASSOCIATION INC	BOYCE	5,658	Active
EAST SIDE WATER SYSTEM	VILLE PLATTE	5,640	Active
WBR DISTRICT 4 -SECTION ROAD WINTERVILLE	PORT ALLEN	5,571	Active
HENDERSON NINA WATER SYSTEM INC	BREAUX BRIDGE	5,535	Active
CYPRESS BLACK BAYOU WATER SYSTEM	BENTON	5,520	Active
RED OAK WATER COMPANY	BATON ROUGE	5,430	Inactive
ST MARY PARISH W&S #2 BAYOU VISTA	PATTERSON	5,379	Active
LAWCO - DEQUINCY WATER SYSTEM	BATON ROUGE	5,370	Active
TOWN OF HAUGHTON WATER SYSTEM	HAUGHTON	5,355	Active
TOWN OF FARMERVILLE WATER SYSTEM	FARMERVILLE	5,352	Active
CALCASIEU PARISH WW DISTRICT NO 4	WESTLAKE	5,340	Active
EGAN WATER CORPORATION	EGAN	5,337	Active
VERNON PARISH WATER AND SEWER COMMISSION	NEW LLANO	5,295	Active
SOUTH GRANT WATER CORPORATION	BENTLEY	5,289	Active
VILLAGE OF TURKEY CREEK WATER SYSTEM	TURKEY CREEK	5,289	Active
MONTEREY RURAL WATER SYSTEM INC	MONTEREY	5,250	Active
TOWN OF GREENWOOD WATER SYSTEM	GREENWOOD	5,205	Active
ST TAMMANY WATER DISTRICT #2	COVINGTON	5,200	Active
WBR WATER DISTRICT IV	PORT ALLEN	5,192	Inactive
TOWN OF BUNKIE WATER SYSTEM	BUNKIE	5,169	Active
CITY OF BROUSSARD WATER SYSTEM	BROUSSARD	5,151	Active
CALCASIEU PARISH WW DISTRICT NO 5	LAKE CHARLES	5,088	Active
CITY OF BERWICK	BERWICK	5,024	Active
KOLIN RUBY WISE WATERWORK DISTRICT 11 A	PINEVILLE	4,992	Active
TOWN OF GRAMBLING WATER SYSTEM	GRAMBLING	4,949	Active
PINEHILL WATERWORKS DISTRICT	SHREVEPORT	4,926	Active
EBARB WWKS DIST # 1 - SPWD1 PURCHASE	—	4,899	Inactive
WESTLAKE CITY OF WATER SYSTEM	WESTLAKE	4,858	Active
TOWN OF RAYVILLE WATER SYSTEM	RAYVILLE	4,842	Active
FOURTH WARD WATER WORKS	ALBANY	4,839	Active
TOWN OF WOODWORTH WATER SYSTEM	WOODWORTH	4,818	Active

Showing the 200 largest of 2,224 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.