State rankings
Louisiana water-system rankings
Lowest-scoring systems in Louisiana
Ranked lowest score first. Population shown for context.
1 CITY OF VIDALIA WATER SYSTEM VIDALIA, LA · ~6,354 served 38 2 CITY OF PLAQUEMINE WATER SYSTEM PLAQUEMINE, LA · ~14,043 served 58 3 VILLAGE OF PARKS WATER SYSTEM PARKS, LA · ~12,801 served 67 4 NEW ORLEANS CARROLLTON WATER WORKS NEW ORLEANS, LA · ~334,903 served 81 5 NEW ORLEANS ALGIERS WATER WORKS NEW ORLEANS, LA · ~52,785 served 81 6 PARISH UTILITIES OF ASCENSION DONALDSONVILLE, LA · ~9,732 served 89 7 PORT SULPHUR WATER DISTRICT BELLE CHASSE, LA · ~10,308 served 92 8 BERWICK BAYOU VISTA WW COMMISSION BERWICK, LA 100 9 AVOYELLES WATER COMMISSION MOREAUVILLE, LA 100 10 BATON ROUGE WATER COMPANY BATON ROUGE, LA · ~596,844 served 100 11 E JEFFERSON WW DISTRICT 1 JEFFERSON, LA · ~275,163 served 100 12 SHREVEPORT WATER SYSTEM SHREVEPORT, LA · ~192,378 served 100 13 LAFAYETTE UTILITIES WATER SYSTEM LAFAYETTE, LA · ~169,389 served 100 14 W JEFFERSON WW DISTRICT 2 JEFFERSON, LA · ~140,264 served 100 15 SCHRIEVER WATER TREATMENT SERVICE AREA HOUMA, LA · ~116,460 served 100 16 LAFOURCHE WATER DISTRICT 1 LOCKPORT, LA · ~81,609 served 100 17 CITY OF LAKE CHARLES WATER SYSTEM LAKE CHARLES, LA · ~79,500 served 100 18 CITY OF BOSSIER CITY WATER SYSTEM BOSSIER CITY, LA · ~78,960 served 100 19 WARD II WATER DISTRICT DENHAM SPRINGS, LA · ~73,506 served 100 20 TANGIPAHOA PARISH WATER DISTRICT NATALBANY, LA · ~72,504 served 100 21 CITY OF ALEXANDRIA WATER SYSTEM ALEXANDRIA, LA · ~66,798 served 100 22 NEW IBERIA WATER SYSTEM (LAWCO) BATON ROUGE, LA · ~59,928 served 100 23 MONROE WATER SYSTEM MONROE, LA · ~57,000 served 100 24 ST CHARLES PARISH DEPT OF WATERWORKS LULING, LA · ~52,879 served 100 25 ST BERNARD PARISH WATERWORKS CHALMETTE, LA · ~44,783 served 100
Highest-scoring large systems in Louisiana
Systems serving 10,000+ people with the best scores.
1 BATON ROUGE WATER COMPANY BATON ROUGE, LA · ~596,844 served 100 2 E JEFFERSON WW DISTRICT 1 JEFFERSON, LA · ~275,163 served 100 3 SHREVEPORT WATER SYSTEM SHREVEPORT, LA · ~192,378 served 100 4 LAFAYETTE UTILITIES WATER SYSTEM LAFAYETTE, LA · ~169,389 served 100 5 W JEFFERSON WW DISTRICT 2 JEFFERSON, LA · ~140,264 served 100 6 SCHRIEVER WATER TREATMENT SERVICE AREA HOUMA, LA · ~116,460 served 100 7 LAFOURCHE WATER DISTRICT 1 LOCKPORT, LA · ~81,609 served 100 8 CITY OF LAKE CHARLES WATER SYSTEM LAKE CHARLES, LA · ~79,500 served 100
Scores reflect EPA public records (violations, enforcement, PFAS), are system-level, and can’t account for your home’s plumbing. See the methodology.