All water systems in Louisiana
1,216 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
East Feliciana Rural Water East Feliciana County |
14,829 | 0 | 0 | |
|
Gowc West Hwy 80 Ark Road WS Ouachita County |
14,649 | 1 | 0 | |
|
Calcasieu Parish WW Dist 9 Carlyss Calcasieu County |
14,502 | 0 | 0 | |
|
City of Deridder Water System Beauregard County |
14,400 | 1 | 0 | |
|
City of Abbeville Water System Vermilion County |
14,217 | 1 | 0 | |
|
City of Plaquemine Water System Iberville County |
14,043 | 0 | 0 | |
|
City of Bogalusa Water System Washington County |
14,000 | 5 | 2 | |
|
City of Baker Water System East Baton Rouge County |
13,855 | 0 | 0 | |
|
West Baton Rouge Water Works District 2 West Baton Rouge County |
13,437 | 0 | 0 | |
|
Gowc North Water System Ouachita County |
13,287 | 0 | 0 | |
|
Barksdale Afb Water System Bossier County |
13,000 | 0 | 0 | |
|
City of Mandeville Water Supply St. Tammany County |
13,000 | 0 | 0 | |
|
Village of Parks Water System St. Martin County |
12,801 | 5 | 4 | |
|
City of Morgan City Water System St. Mary County |
12,703 | 1 | 0 | |
|
Cecilia Water Corporation St. Martin County |
12,420 | 0 | 0 | |
|
Buckeye Water District 50 Rapides County |
12,078 | 0 | 0 | |
|
West Feliciana Consol Wwks District 13 West Feliciana County |
12,045 | 1 | 0 | |
|
Gowc East Water System Ouachita County |
11,742 | 0 | 0 | |
|
Houma Water Treatment Service Area Terrebonne County |
11,658 | 0 | 0 | |
|
City of Carencro Water System Lafayette County |
11,301 | 2 | 2 | |
|
Utilities INC North Park Water Supply St. Tammany County |
11,298 | 0 | 0 | |
|
Cheniere Drew North Water System Ouachita County |
11,280 | 0 | 0 | |
|
City of Rayne Water System Acadia County |
10,908 | 1 | 0 | |
|
Fort Polk South Water System Vernon County |
10,902 | 0 | 0 | |
|
Bayou Liberty Water Association St. Tammany County |
10,791 | 0 | 0 | |
|
Southwest Ouachita Waterworks, INC Ouachita County |
10,725 | 1 | 0 | |
|
Pointe Coupee Water Works District 1 Pointe Coupee County |
10,629 | 2 | 1 | |
|
City of Leesville Water System Vernon County |
10,545 | 1 | 1 | |
|
ST John Water District 1 St. John the Baptist County |
10,484 | 1 | 0 | |
|
Port Sulphur Water District Plaquemines County |
10,308 | 2 | 0 | |
|
City of Youngsville Purchase WS Lafayette County |
10,281 | 2 | 1 | |
|
City of Broussard Purchase Water System Lafayette County |
10,242 | 0 | 0 | |
|
Milton Water System Lafayette County |
10,200 | 0 | 0 | |
|
Magnolia-Eden Isles St. Tammany County |
10,155 | 0 | 0 | |
|
Bayou Teche Water Works St. Martin County |
10,137 | 3 | 1 | |
|
City of Breaux Bridge Water System St. Martin County |
10,098 | 1 | 1 | |
|
City of Jennings Water System Jefferson Davis County |
9,837 | 1 | 1 | |
|
Jeff Davis Water and Sewer Commission 1 Jefferson Davis County |
9,780 | 1 | 1 | |
|
Parish Utilities of Ascension Ascension County |
9,732 | 2 | 1 | |
|
Water & Sewer Commission 4 of ST Mary St. Mary County |
9,709 | 1 | 0 | |
|
City of Scott Water System Lafayette County |
9,696 | 2 | 0 | |
|
Gowc Brownville Water System Ouachita County |
9,696 | 1 | 0 | |
|
Town of Leonville Water System St. Landry County |
9,552 | 0 | 0 | |
|
Mire Branch Water Corporation Acadia County |
9,480 | 0 | 0 | |
|
Fort Polk North Water System Vernon County |
9,420 | 0 | 0 | |
|
Gowc Kiroli Darbonne WS Ouachita County |
9,210 | 1 | 0 | |
|
Town of New Roads Water System Pointe Coupee County |
9,024 | 5 | 3 | |
|
Town of Livingston Water System Livingston County |
8,946 | 2 | 0 | |
|
Iberia Water Works District 3 Coteau Iberia County |
8,775 | 0 | 0 | |
|
Wwks District 2 of ST Helena St. Helena County |
8,772 | 1 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Louisiana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.