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State directory · dataset 2026.08
Browse 42 indexed systems and see how frequently the directory identified public payment, fee, leak, assistance, and emergency information. Coverage describes the research record—not utility performance.
Louisiana research snapshot
71%
Online portal identified
30 of 42
12%
Public fee detail
5 of 42
33%
Leak policy detail
14 of 42
19%
Assistance detail
8 of 42
40%
Emergency route
17 of 42
Public Water Authority
Service area: New Orleans and Orleans Parish
Population: Approximately 370,000-390,000 New Orleans residents and local accounts, including water, sewerage, drainage-related operations, and sanitation billing collected for the City.
Private Investor-Owned Utility
Service area: Baton Rouge metropolitan area and East Baton Rouge Parish
Population: The company does not publish a current system-population total on its public site. An official East Baton Rouge Parish FAQ states that approximately 93% of parish customers are billed by Baton Rouge Water Company, establishing a service base well above the 3,300-person threshold; the exact population estimate should be confirmed from the current regulatory filing.
Private Investor-Owned Utility
Service area: East Baton Rouge Parish and Baton Rouge
Population: 596,844 people (EPA SDWIS active CWS PWS LA1033005)
Public Water Authority
Service area: New Orleans Carrollton service area
Population: 334,903 people (EPA SDWIS active CWS PWS LA1071009)
Public Water Authority
Service area: East Jefferson Parish
Population: 275,163 people (EPA SDWIS active CWS PWS LA1051001)
Municipal Department
Service area: Shreveport
Population: 192,378 people (EPA SDWIS active CWS PWS LA1017031); the Department reports more than 68,000 monthly customer invoices.
Municipal Department
Service area: Lafayette Parish and Lafayette Utilities System service area
Population: 169,389 people (EPA SDWIS active CWS PWS LA1055017)
Public Water Authority
Service area: West Jefferson County Municipal Water District 2
Population: 140,264 people (EPA SDWIS active CWS PWS LA1051004)
Public Water Authority
Service area: Terrebonne Parish, including Schriever, Houma-area communities, Bayou Blue, Bayou Cane, Gray, and Houma
Population: 116,460 (EPA queue estimate; the district states that its two plants serve more than 42,000 residential and commercial customers)
Public Water Authority
Service area: Lafourche Parish Water District No. 1 service area, Louisiana
Population: 81,609 people
Municipal Department
Service area: Bossier City
Population: 79,506 people (EPA CWS estimate for City of Bossier City Water System)
Public Water Authority
Service area: Ward Two Water District service area in Livingston Parish, including Denham Springs area
Population: 78,147 people (EPA CWS estimate for Ward II Water District)
Public Water Authority
Service area: Tangipahoa Parish Water District service area
Population: 75,873 people (EPA SDWA system estimate)
Municipal Department
Service area: City of Alexandria
Population: 66,798 people (EPA SDWA queue estimate for LA1079001)
Private Investor-Owned Utility
Service area: New Iberia service area
Population: 59,928 people (EPA SDWA queue estimate for LA1045009)
Municipal Department
Service area: City of Monroe
Population: 57,000 people (EPA SDWA queue estimate for LA1073031)
Public Water Authority
Service area: St. Charles Parish Waterworks District 2
Population: 52,879 people (EPA SDWA queue estimate for LA1089001)
Public Water Authority
Service area: Algiers/New Orleans service area
Population: 52,785 people (EPA SDWA queue estimate for LA1071001)
Municipal Department
Service area: Slidell
Population: 35,547 people (EPA SDWA queue estimate for LA1103041)
Public Water Authority
Service area: St. John Water District 3
Population: 31,965 people (EPA SDWA queue estimate for LA1095007)
Municipal Department
Service area: Zachary
Population: 31,569 people (EPA SDWA queue estimate for LA1033030)
Municipal Department
Service area: Natchitoches
Population: 27,693 people (EPA SDWA queue estimate for LA1069007)
Municipal Department
Service area: Denham Springs
Population: 25,725 people (EPA SDWIS 2026Q2 estimate for LA1063004)
Municipal Department
Service area: Sulphur
Population: 24,489 people (EPA SDWIS 2026Q2 estimate for LA1019044)
Public Water Authority
Service area: Maurice / Vermilion
Population: 24,132 people (EPA SDWIS 2026Q2 estimate for LA1113034)
Public Water Authority
Service area: Longville / Beauregard Parish
Population: 24,000 people (EPA SDWIS 2026Q2 estimate for LA1011008)
Municipal Department
Service area: Ruston
Population: 22,468 people (EPA SDWIS 2026Q2 estimate for LA1061017)
Public Water Authority
Service area: Assumption Parish
Population: 21,366 people (EPA SDWIS 2026Q2 estimate for LA1007001)
Municipal Department
Service area: Hammond
Population: 21,135 people (EPA SDWIS 2026Q2 estimate for LA1105009)
Public Water Authority
Service area: Lake Charles
Population: 20,837 people (EPA SDWIS 2026Q2 estimate for LA1019051)
Municipal Department
Service area: Opelousas
Population: 20,388 people (EPA SDWIS 2026Q2 estimate for LA1097010)
Municipal Department
Service area: Pineville
Population: 20,358 people (EPA SDWIS 2026Q2 estimate for LA1079016)
Public Water Authority
Service area: Tioga
Population: 19,983 people (EPA SDWIS 2026Q2 estimate for LA1079017)
Public Water Authority
Service area: Belle Chasse
Population: 19,644 people (EPA SDWIS 2026Q2 estimate for LA1075001)
Public Water Authority
Service area: Covington
Population: 18,372 people (EPA SDWIS 2026Q2 estimate for LA1103149)
Municipal Department
Service area: Bastrop
Population: 18,105 people (EPA SDWIS 2026Q2 estimate for LA1067003)
Municipal Department
Service area: LOCKPORT
Population: 81609 people (EPA SDWIS 2026Q2 active CWS estimate for LA1057001)
Municipal Department
Service area: BOSSIER CITY
Population: 79506 people (EPA SDWIS 2026Q2 active CWS estimate for LA1015004)
Municipal Department
Service area: LAKE CHARLES
Population: 79500 people (EPA SDWIS 2026Q2 active CWS estimate for LA1019029)
Municipal Department
Service area: DENHAM SPRINGS
Population: 78147 people (EPA SDWIS 2026Q2 active CWS estimate for LA1063039)
Municipal Department
Service area: NATALBANY
Population: 75873 people (EPA SDWIS 2026Q2 active CWS estimate for LA1105008)
Municipal Department
Service area: CHALMETTE
Population: 44783 people (EPA SDWIS 2026Q2 active CWS estimate for LA1087001)
Louisiana directory notes
This state hub brings together 42 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.
The most important distinction is between a directory listing and an official account channel. US Water Bill Pay provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.
If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.
