Louisiana Drinking Water Compliance Records
908 water systems serving 5,239,132 people. 12,996 historical EPA violation records in the Q2 2026 snapshot.
TapScore Compliance-History Grades
A
529
58%
B
63
7%
C
100
11%
D
117
13%
F
99
11%
908
Water Systems
5,239,132
Population Served
12,996
Historical Records
6,122
Health-Based (All Years)
Systems With the Most Recent EPA Records
TOWN OF NEWELLTON WATER SYSTEM
1,100 served180 historical records152 recent
F
PENDLETON WATER ASSOCIATION
2,634 served141 historical records59 recent
F
VILLAGE OF SIKES WATER SYSTEM
639 served206 historical records55 recent
F
TOWN OF FERRIDAY WATER SYSTEM
3,816 served235 historical records53 recent
F
LAKEVIEW TRAILER PARK WATER SYSTEM
30 served78 historical records46 recent
F
VIXEN WATER SYSTEM
750 served139 historical records45 recent
F
JONES MCGINTY WATER SYSTEM
696 served100 historical records39 recent
F
CITY OF FRANKLIN WATER SUPPLY
8,325 served103 historical records39 recent
F
SOUTHGATE MHP WATER SYSTEM
177 served97 historical records37 recent
F
VILLAGE OF RIDGECREST WATER SUPPLY
684 served72 historical records36 recent
F
Large Systems With No Recent Records
BATON ROUGE WATER COMPANY
596,844 served1 historical record
A
NEW ORLEANS CARROLLTON WATER WORKS
334,903 served1 historical record
A
E JEFFERSON WW DISTRICT 1
275,163 served0 historical records
A
LAFAYETTE UTILITIES WATER SYSTEM
169,389 served0 historical records
A
W JEFFERSON WW DISTRICT 2
140,264 served0 historical records
A
SCHRIEVER WATER TREATMENT SERVICE AREA
116,460 served1 historical record
A
LAFOURCHE WATER DISTRICT 1
81,609 served2 historical records
A
CITY OF LAKE CHARLES WATER SYSTEM
79,500 served4 historical records
A
WARD II WATER DISTRICT
78,147 served6 historical records
A
CITY OF ALEXANDRIA WATER SYSTEM
66,798 served11 historical records
A
Largest Water Systems in Louisiana
| Water System | Grade | Population | Historical Records |
|---|---|---|---|
| BATON ROUGE WATER COMPANY | A | 596,844 | 1 |
| NEW ORLEANS CARROLLTON WATER WORKS | A | 334,903 | 1 |
| E JEFFERSON WW DISTRICT 1 | A | 275,163 | 0 |
| CITY OF SHREVEPORT WATER SYSTEM | F | 192,378 | 23 |
| LAFAYETTE UTILITIES WATER SYSTEM | A | 169,389 | 0 |
| W JEFFERSON WW DISTRICT 2 | A | 140,264 | 0 |
| SCHRIEVER WATER TREATMENT SERVICE AREA | A | 116,460 | 1 |
| LAFOURCHE WATER DISTRICT 1 | A | 81,609 | 2 |
| CITY OF BOSSIER CITY WATER SYSTEM | B | 79,506 | 3 |
| CITY OF LAKE CHARLES WATER SYSTEM | A | 79,500 | 4 |
| WARD II WATER DISTRICT | A | 78,147 | 6 |
| TANGIPAHOA PARISH WATER DISTRICT | C | 75,873 | 25 |
| CITY OF ALEXANDRIA WATER SYSTEM | A | 66,798 | 11 |
| LAWCO - NEW IBERIA WATER SYSTEM | A | 59,928 | 0 |
| CITY OF MONROE WATER SYSTEM | D | 57,000 | 15 |
| ST CHARLES PARISH DEPT OF WATERWORKS | A | 52,879 | 2 |
| NEW ORLEANS ALGIERS WATER WORKS | A | 52,785 | 0 |
| ST BERNARD PARISH WATERWORKS | A | 44,783 | 6 |
| SLIDELL WATER SUPPLY | C | 35,547 | 17 |
| ST JOHN WATER DISTRICT 3 | A | 31,965 | 0 |
Contaminants in Louisiana
Lead in LouisianaArsenic in LouisianaNitrate in LouisianaFluoride in LouisianaPFOS in LouisianaPFOA in LouisianaTHMs in LouisianaHAA5 in Louisiana
Cities in Louisiana
BATON ROUGE(14)JEFFERSON(2)NEW ORLEANS(4)LAFAYETTE(17)SHREVEPORT(12)HOUMA(2)LAKE CHARLES(17)WEST MONROE(19)DENHAM SPRINGS(5)COVINGTON(23)LOCKPORT(1)NATALBANY(3)BOSSIER CITY(4)DES PERES(79)ALEXANDRIA(3)MANDEVILLE(31)MONROE(2)LULING(1)SLIDELL(8)LAPLACE(4)SULPHUR(3)CHALMETTE(1)RUSTON(7)OPELOUSAS(3)PLAQUEMINE(6)BENTON(7)BELLE CHASSE(4)ZACHARY(2)PORT ALLEN(5)ABBEVILLE(3)NATCHITOCHES(1)MAURICE(2)MINDEN(12)PINEVILLE(2)NEW ROADS(5)BASTROP(5)LONGVILLE(1)HAMMOND(6)FORT POLK(3)NAPOLEONVILLE(1)VILLE PLATTE(5)MANY(6)TIOGA(1)BROUSSARD(5)RAYNE(3)DUSON(4)YOUNGSVILLE(3)MANSFIELD(5)MARKSVILLE(4)GRETNA(1)GONZALES(2)BLANCHARD(1)WALKER(1)BREAUX BRIDGE(3)MORGAN CITY(2)THIBODAUX(1)ETHEL(1)CONVENT(2)DERIDDER(1)ST. FRANCISVILLE(2)BOGALUSA(2)JENNINGS(2)BAKER(1)PATTERSON(2)ST. MARTINVILLE(4)CHURCH POINT(2)MILTON(4)LIVINGSTON(2)COUSHATTA(9)BARKSDALE AFB(1)FERRIDAY(3)PARKS(1)LAKE ARTHUR(2)CECILIA(1)FARMERVILLE(6)ALBANY(2)TALLULAH(2)DEVILLE(1)WINNFIELD(4)DONALDSONVILLE(2)ZWOLLE(5)GRAMBLING(3)CARENCRO(2)BOYCE(3)KINDER(2)LEESVILLE(3)GILBERT(6)JENA(6)SUNSET(3)WESTLAKE(2)SCOTT(3)LOREAUVILLE(1)GREENSBURG(2)WELSH(2)LAWTELL(2)EUNICE(2)CHARENTON(1)ANGIE(5)OAKDALE(4)LEONVILLE(1)