EWG Tap Water Database

Large utilities in Louisiana

Below are utilities in Louisiana serving over 10,000 people, listed alphabetically.

Utility	Location	People Served

Assumption Parish Waterworks District 1	Napoleonville, LA	21,366
Barksdale Afb Water System	Barksdale Afb, LA	13,000
Bastrop Water System	Bastrop, LA	18,105
Baton Rouge Water Company	Baton Rouge, LA	579,714
Bayou Liberty Water Association	Slidell, LA	10,791
Beauregard Water Works District #3	Longville, LA	23,100
Belle Chasse Water District	Belle Chasse, LA	19,644
Blanchard Water System	Blanchard, LA	15,882
Bossier City Water System	Bossier City, LA	76,685
Buckeye Water District 50	Deville, LA	12,078
Calcasieu Parish WW District 9 Carlyss	Sulphur, LA	14,208
Calcasieu Parish WW District No 1	Lake Charles, LA	20,837
Cecilia Water Corporation	Cecilia, LA	11,949
Cheniere Drew North Water System	West Monroe, LA	11,280
City of Abbeville Water System	Abbeville, LA	14,445
City of Alexandria Water System	Alexandria, LA	66,798
City of Baker Water System	Baker, LA	13,855
City of Bogalusa Water System	Bogalusa, LA	14,000
City of Broussard Water System	Broussard, LA	14,370
City of Carencro Water System	Carencro, LA	10,485
City of Denham Springs Water System	Denham Springs, LA	25,725
City of Deridder Water System	Deridder, LA	14,400
City of Gonzales Water System	Gonzales, LA	16,806
City of Hammond Water System	Hammond, LA	21,135
City of Lake Charles Water System	Lake Charles, LA	85,000
City of Opelousas Water System	Opelousas, LA	19,764
City of Pineville Water System	Pineville, LA	20,315
City of Plaquemine Water System	Plaquemine, LA	14,043
City of Youngsville Purchase Ws	Youngsville, LA	17,319
Covington Water Supply	Covington, LA	16,185
Crowley Water System (LAWCO)	Baton Rouge, LA	17,754
East Feliciana Rural Water	Ethel, LA	14,829
Eden Isles Water Supply	Des Peres, LA	10,155
Eunice Water System (LAWCO)	Baton Rouge, LA	15,588
Fort Johnson South Water System	Fort Polk, LA	10,902
Gowc East Water System	West Monroe, LA	11,742
Gowc North Water System	West Monroe, LA	13,287
Gretna Waterworks	Gretna, LA	17,802
Houma Water Treatment Service Area	Houma, LA	11,148
Jefferson Parish	Jefferson, LA	275,163
Lafayette Utilities Water System	Lafayette, LA	156,516
Lafourche Water District 1	Lockport, LA	81,609
LPWD South	Duson, LA	13,587
LPWDN North Region	Lafayette, LA	16,092
Mandeville Water Supply	Mandeville, LA	13,000
Milton Purchase Water System	Milton, LA	11,430
Minden Water System	Minden, LA	16,281
Monroe Water System	Monroe, LA	57,000
Morgan City Water System	Morgan City, LA	12,703
Natchitoches Water System	Natchitoches, LA	29,334
New Iberia Water System (lAWCO)	Baton Rouge, LA	60,123
New Orleans Algiers Water Works	New Orleans, LA	52,785
New Orleans Carrollton Waterworks	New Orleans, LA	291,044
Rapides Parish Waterworks District 3	Tioga, LA	19,983
Ruston Water System	Ruston, LA	22,468
Schriever Water Treatment Service Area	Houma, LA	105,852
Shreveport Water System	Shreveport, LA	201,000
Slidell Water Supply	Slidell, LA	35,544
Southwest Ouachita Waterworks Inc.	West Monroe, LA	10,725
St Bernard Parish Waterworks	Chalmette, LA	44,000
St Charles Water District 1 East Bank	Luling, LA	52,879
St John Water District 1	Laplace, LA	10,484
St John Water District 3	Laplace, LA	31,965
St Tam Parish - Briarwood Terrace	Covington, LA	17,536
St. Tam Parish-faubourg-coquille	Covington, LA	12,768
Sulphur Water System	Sulphur, LA	20,632
Tangipahoa Parish Water District	Hammond, LA	59,529
Thibodaux Waterworks	Thibodaux, LA	15,810
Utilities Inc. - North Park Water Supply	Mandeville, LA	11,298
Village of Parks Water System	Parks, LA	12,801
Village Water System	Benton, LA	10,890
Walker Water System	Walker, LA	15,813
Ward II Water District	Denham Springs, LA	73,506
Water Works District #1 of Vermilion	Maurice, LA	23,490
West Baton Rouge Water Works District 2	Port Allen, LA	13,437
West Feliciana Consol Wwks District 13	St. Francisville, LA	10,956
West Hwy 80 Ark Road WS	West Monroe, LA	14,649
West Jefferson Waterworks District 2	Jefferson, LA	188,770
West Monroe Water System	West Monroe, LA	16,005
Zachary Water System	Zachary, LA	25,503

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

Utility	Location	People Served	Violation Points

Newellton Water System	Newellton, LA	1,100	245
River Ridge Estates Water System	Breaux Bridge, LA	75	146
Jones Mcginty Water System	Jones, LA	696	118
Sardis Water System	Gilbert, LA	1,404	116
Salem Water System	Farmerville, LA	753	113
Village of Sikes Water System	Sikes, LA	639	111
Litroe Water System	Marion, LA	369	107
Belmont Waterworks Inc.	Belmont, LA	2,805	106
Town of Ferriday Water System	Ferriday, LA	4,193	103
Vixen Water System	Chatham, LA	774	102
Town of Clayton Water System	Clayton, LA	723	101
Alberta Water System	Castor, LA	1,860	101
Village of Georgetown Water Supply	Georgetown, LA	363	101
Pleasant Hills-crossroads Water Systems	Joyce, LA	840	101
Wards Chapel Water System	Farmerville, LA	1,350	101
South Desoto Water System	Mansfield, LA	936	100
Hico Water System	Dubach, LA	1,530	99
Enterprise Water System	Harrisonburg, LA	570	97
Union Springs Water System	Converse, LA	1,305	97
Ebarb Wwks District #1 - North Ebarb	Zwolle, LA	1,761	96
West Sterlington Water System	Sterlington, LA	1,095	96
Backwood Village Water System	Saline, LA	783	96
Town of Tullos Water System	Tullos, LA	792	96
Darbonne Ws North	Bernice, LA	3,186	96
Farmerville Water System	Farmerville, LA	5,400	95
Red Hill Waterworks Inc.	Georgetown, LA	1,872	95
West Winn Water System Inc.	Winnfield, LA	2,064	95
Bellwood Water System	Provencal, LA	1,032	95
Ebarb Wwks District # 1 - N Ebarb/belmont	Zwolle, LA	789	95
Downsville Water System	Downsville, LA	216	95

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

Utility	Location	People Served	Violation Points

Shreveport Water System	Shreveport, LA	201,000	55
Village of Parks Water System	Parks, LA	12,801	15
City of Opelousas Water System	Opelousas, LA	19,764	15
Water Works District #1 of Vermilion	Maurice, LA	23,490	15
Southwest Ouachita Waterworks Inc.	West Monroe, LA	10,725	10
Blanchard Water System	Blanchard, LA	15,882	10
Village Water System	Benton, LA	10,890	5
City of Baker Water System	Baker, LA	13,855	5
West Hwy 80 Ark Road WS	West Monroe, LA	14,649	5
West Monroe Water System	West Monroe, LA	16,005	5
Covington Water Supply	Covington, LA	16,185	5
City of Pineville Water System	Pineville, LA	20,315	5
West Jefferson Waterworks District 2	Jefferson, LA	188,770	5
City of Youngsville Purchase Ws	Youngsville, LA	17,319	1

Contaminants found in Louisiana above health guidelines

	Found above health guidelines		Found
Contaminant	# of Utilities	People Served	# of Utilities	People Served

Haloacetic acids (HAA5)	907	5,119,901	923	5,148,182
Total trihalomethanes (TTHMs)	878	5,061,067	901	5,114,282
Dibromoacetic acid	858	4,948,562	862	4,952,482
Dichloroacetic acid	782	4,847,409	899	5,127,367
Chloroform	777	4,811,238	884	5,077,106
Trichloroacetic acid	791	4,726,129	859	5,005,492
Bromodichloromethane	855	4,337,318	872	4,994,825
Dibromochloromethane	817	4,170,184	849	4,353,536
Haloacetic acids (HAA9)	140	3,528,940	140	3,528,940
Radium, combined (-226 & -228)	606	3,282,706	739	4,457,702
Arsenic	306	2,501,305	306	2,501,305
Chromium (hexavalent)	73	2,011,228	113	3,325,259
Nitrate & nitrite	121	1,612,703	633	4,536,323
Bromoform	367	1,507,653	669	3,797,951
Perfluorooctanoic acid (PFOA)	13	419,608	13	419,608
Perfluorooctane sulfonate (PFOS)	10	371,250	11	378,009
Chlorate	15	324,350	74	2,101,043
Manganese	60	267,161	779	4,807,530
Atrazine	10	109,214	83	1,820,135
Nitrate	12	49,336	13	52,195
6:2 Fluorotelomer Sulfonic Acid (6:2 FTSA)	3	32,835	3	32,835
6:2 Fluorotelomer sulfonate (6:2FTS)	15	23,016	15	23,016
Perfluorohexane sulfonate (PFHXS)	7	14,161	7	14,161
Cadmium	4	13,629	4	13,629
Benzo[a]pyrene	1	12,768	7	51,002
Perfluorononanoic acid (PFNA)	4	8,793	4	8,793
Perfluorodecanoic acid (PFDA)	4	8,793	4	8,793
Perfluorododecanoic acid (PFDoA)	4	8,793	4	8,793
Perfluoroundecanoic acid (PFUnA)	4	8,793	4	8,793
Aluminum	2	6,639	612	4,577,203
Tetrachloroethylene (perchloroethylene)	2	5,742	5	36,576
Antimony	1	4,104	84	1,069,298
Carbon tetrachloride	2	3,996	11	326,153
Uranium, combined (pCi/L)	2	2,556	35	651,146
1,2-Dichloroethane	2	1,935	5	69,891
Bromochloromethane	1	1,891	7	75,792
Simazine	1	1,878	32	1,269,717

Contaminants found in Louisiana above legal limits

Contaminant	# of Utilities	People Served

Total trihalomethanes (TTHMs)	44	69,939
Arsenic	8	30,164
Haloacetic acids (HAA5)	14	29,144
Radium, combined (-226 and -228)	1	5,250

EWG’s Tap
Water Database

Nitrate in
Tap Water

STATE

Louisiana

CONTAMINANTS

100

serves

5,160,000

data

2013-2024

UTILITIES

942

Overview

Large utilities in Louisiana

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

Contaminants found in Louisiana above health guidelines

Contaminants found in Louisiana above legal limits

What filter type is right for you?

Water
Contaminants

Carbon Filters

Reverse Osmosis

Other Considerations

Ion Exchange

Whole-House Filters

Distillation

Take Action

Need help finding a filter?

We’re in this together

Protect your water

EWG’s TapWater Database

STATE

Louisiana

CONTAMINANTS

100

serves

5,160,000

data

2013-2024

UTILITIES

942

Overview

Large utilities in Louisiana

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Louisiana

Contaminants found in Louisiana above health guidelines

Contaminants found in Louisiana above legal limits

What filter type is right for you?

WaterContaminants

Carbon Filters

Reverse Osmosis

Other Considerations

Ion Exchange

Whole-House Filters

Distillation

Take Action

Need help finding a filter?

We’re in this together

Protect your water

EWG’s Tap
Water Database

Water
Contaminants