Tapcensus

All water systems in Louisiana

1,216 systems

SystemServesStatusRules violated, 3 yrUnresolved
Prairie Ronde Water System INC
St. Landry County
6,105 0 0
Henderson Nina Water System INC
St. Martin County
6,010 2 1
Grambling State University WS
Lincoln County
6,000 4 3
South Toledo Bend Water District
Sabine County
5,943 2 0
Waterworks District 7
Caddo County
5,889 0 0
City of Lake Providence Water System
East Carroll County
5,850 5 3
East Side Water System
Evangeline County
5,718 3 0
Magnolia Town & Country Service
Ouachita County
5,715 1 0
Jeff Davis Central Waterworks District
Jefferson Davis County
5,709 0 0
Fifth Ward Water System
Avoyelles County
5,676 2 0
Rapides Island Water Association INC
Rapides County
5,658 0 0
Wbr District 4 -Section Road Winterville
West Baton Rouge County
5,571 0 0
Cypress Black Bayou Water System
Bossier County
5,520 0 0
ST Mary Parish W&s #2 Bayou Vista
St. Mary County
5,379 0 0
Town of Haughton Water System
Bossier County
5,355 3 1
Town of Farmerville Water System
Union County
5,352 2 1
Calcasieu Parish WW District NO 4
Calcasieu County
5,340 3 2
Egan Water Corporation
Acadia County
5,337 4 2
Lawco Dequincy Water System
Calcasieu County
5,319 0 0
Vernon Parish Water and Sewer Commission
Vernon County
5,295 0 0
South Grant Water Corporation
Grant County
5,289 1 0
Village of Turkey Creek Water System
Evangeline County
5,289 1 0
Monterey Rural Water System INC
Concordia County
5,250 1 0
Town of Greenwood Water System
Caddo County
5,205 2 0
ST Tammany Water District #2
St. Tammany County
5,200 0 0
Town of Bunkie Water System
Avoyelles County
5,169 1 1
City of Broussard Water System
Lafayette County
5,151 0 0
Calcasieu Parish WW District NO 5
Calcasieu County
5,088 0 0
City of Berwick
St. Mary County
5,024 2 1
Kolin Ruby Wise Waterwork District 11 a
Rapides County
4,992 0 0
Town of Grambling Water System
Lincoln County
4,949 5 3
Pinehill Waterworks District
Caddo County
4,926 6 4
City of Westlake Water System
Calcasieu County
4,858 2 2
Town of Rayville Water System
Richland County
4,842 5 3
Fourth Ward Water Works
Livingston County
4,839 3 3
Town of Woodworth Water System
Rapides County
4,818 0 0
Calcasieu Parish WW District 7
Calcasieu County
4,791 0 0
Town of Lutcher Waterworks
St. James County
4,781 2 1
ST Landry Water Works District 2 Rural
St. Landry County
4,761 0 0
Magnolia-The Meadows
St. Tammany County
4,701 1 0
Beau Chene Water System
St. Tammany County
4,650 0 0
Gardner Community Water System
Rapides County
4,566 0 0
Town of Mamou Water System
Evangeline County
4,559 1 0
Colyell Community Water
Livingston County
4,544 2 1
Bayou Des Cannes Water System
Evangeline County
4,530 0 0
Keatchie Water System
De Soto County
4,446 6 4
United Water System
St. Martin County
4,446 2 2
Town of Many Water System
Sabine County
4,428 1 0
Town of Homer Water System
Claiborne County
4,365 5 1
West Vernon Parish Waterworks District
Vernon County
4,365 0 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.