Louisiana

976 Utilities
Serving: 4,972,000
Data available: 2014-2019
Contaminants Found: 91

EWG's drinking water quality report for Louisiana shows results of tests conducted by the water utilities in Louisiana and provided to EWG by the Louisiana Department of Health and Hospitals.

LARGE UTILITIES

ALL UTILITIES WITH VIOLATIONS

LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Louisiana serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Louisiana

Utility	Location	People Served
Assumption Parish Waterworks District 1	Napoleonville, LA	22,862
Barksdale Afb Water System	Barksdale Afb, LA	13,000
Bastrop Water System	Bastrop, LA	18,741
Baton Rouge Water Company	Baton Rouge, LA	527,067
Bayou Liberty Water Association	Slidell, LA	10,500
Beauregard Water Works District #3	Dry Creek, LA	21,600
Belle Chasse Water District	Belle Chasse, LA	17,391
Blanchard Water System	Blanchard, LA	13,650
Bossier City Water System	Bossier City, LA	68,094
Brownville Water System	West Monroe, LA	10,872
Buckeye Water District 50	Deville, LA	11,700
Calcasieu Parish WW District 9 Carlyss	Sulphur, LA	13,500
Calcasieu Parish WW District No 1	Lake Charles, LA	20,837
Cecilia Water Corporation	Cecilia, LA	11,529
City of Abbeville Water System	Abbeville, LA	15,012
City of Alexandria Water System	Alexandria, LA	54,782
City of Baker Water System	Baker, LA	13,855
City of Bogalusa Water System	Bogalusa, LA	14,000
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	15,024
City of Hammond Water System	Hammond, LA	21,135
City of Jennings Water System	Jennings, LA	10,365
City of Lake Charles Water System	Lake Charles, LA	85,000
City of Opelousas Water System	Opelousas, LA	20,229
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	14,259
Covington Water Supply	Covington, LA	14,700
Crowley Water System (LAWCO)	Baton Rouge, LA	19,000

Utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 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
Village of Calvin Water System	Calvin, LA	591	127
Belmont Waterworks Inc.	Belmont, LA	2,805	126
Litroe Water System	Marion, LA	369	119
Town of Ferriday Water System	Ferriday, LA	4,193	114
Spring Creek Subdivision Water System	West Monroe, LA	324	113
Salem Water System	Farmerville, LA	753	112
Union Parish Waterworks District 1	Farmerville, LA	1,626	106
Newellton Water System	Newellton, LA	1,100	106
Ajax Beulah Water System	Marthaville, LA	453	105
Bel-di-gil Water System	Belcher, LA	1,132	105
Vixen Water System East	Chatham, LA	486	104
Jones Mcginty Water System	Jones, LA	801	104
Concord Water System	Marion, LA	426	102
Joyce Water Supply	Mandeville, LA	474	102
River Ridge Estates Water System	Youngsville, LA	75	102
Wards Chapel Water System	Farmerville, LA	1,350	102
Ebarb Wwks District # 1 - N Ebarb/belmont	Zwolle, LA	450	101
Alberta Water System	Castor, LA	1,860	101
Hudson Gaars Mill Water System	Dodson, LA	660	101
Pleasant Hills-crossroads Water Systems	Joyce, LA	840	100
Indian Village Water System	Calhoun, LA	1,686	100
Cadeville Water District	West Monroe, LA	4,800	100
Village of Georgetown Water Supply	Georgetown, LA	302	97
Chatham Water System	Chatham, LA	1,137	97
Linville-haile Water System	Marion, LA	1,635	96
Town of Tullos Water System	Tullos, LA	792	96
Sardis Water System	Gilbert, LA	1,404	96
Ebarb Wwks District #1 - North Ebarb	Zwolle, LA	1,722	96
Fairview Union Water System	Coushatta, LA	2,205	95
Red Hill Waterworks Inc.	Georgetown, LA	1,872	95

Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Louisiana

Utility	Location	People Served	Violation Points
Southwest Ouachita Waterworks Inc.	West Monroe, LA	10,092	75
Brownville Water System	West Monroe, LA	10,872	55
North Monroe Et Al Water System	West Monroe, LA	10,866	50
Lakeshore Swartz Water System	West Monroe, LA	11,330	40
West Hwy 80 Ark Road WS	West Monroe, LA	13,386	20
City of Opelousas Water System	Opelousas, LA	20,229	6
Houma Water Treatment Service Area	Houma, LA	31,560	6
Cecilia Water Corporation	Cecilia, LA	11,529	5
Village of Parks Water System	Parks, LA	12,360	5
West Monroe Water System	West Monroe, LA	15,930	5
Water Works District #1 of Vermilion	Maurice, LA	21,600	5
New Orleans Algiers Water Works	New Orleans, LA	52,785	5
City of Youngsville Purchase Ws	Youngsville, LA	14,259	2
Beauregard Water Works District #3	Dry Creek, LA	21,600	2
Covington Water Supply	Covington, LA	14,700	1
Sulphur Water System	Sulphur, LA	20,632	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)		957	4,964,990			960	4,967,441
Total trihalomethanes (TTHMs)		917	4,914,916			931	4,954,595
Dichloroacetic acid		907	4,882,699			939	4,938,966
Trichloroacetic acid		879	4,817,048			899	4,845,061
Dibromoacetic acid		901	4,785,943			903	4,786,972
Chloroform		840	4,757,184			922	4,921,865
Bromodichloromethane		854	4,213,842			861	4,217,996
Radium, combined (-226 & -228)		715	4,024,564			709	4,030,434
Dibromochloromethane		813	3,985,442			833	4,140,735
Arsenic		391	3,503,229			380	3,498,137
Haloacetic acids (HAA9)		135	2,660,395			145	3,434,645
Chromium (hexavalent)		106	2,388,122			125	3,249,627
Bromoform		433	1,834,986			585	2,922,285
Nitrate and nitrite		155	1,635,244			666	4,356,497
Chlorate		27	926,543			84	2,113,309
Atrazine		29	917,501			41	1,263,513
Manganese		191	866,956			863	4,739,174
Uranium		16	620,427			65	1,346,538
Nitrate		21	293,796			25	313,227
Aluminum		17	257,951			465	4,011,761
Benzo[a]pyrene		8	31,362			12	585,741
Cadmium		7	28,692			7	28,692
Tetrachloroethylene (perchloroethylene)		3	23,754			3	23,754
Barium		11	19,420			566	3,341,485
Thallium		4	18,378			5	18,768
Antimony		1	10,872			18	132,546
Carbon tetrachloride		2	8,739			2	8,739
1,2-Dichloroethane		2	3,789			13	33,770
Benzene		1	957			3	11,497
Di(2-ethylhexyl) phthalate		1	196			77	894,792
Vinyl chloride		1	171			1	171

Contaminants found in Louisiana above legal limits

Contaminant	People Served
Total trihalomethanes (TTHMs)	77	117,357
Arsenic	11	33,191
Haloacetic acids (HAA5)	21	25,377
Radium, combined (-226 & -228)	1	5,250

Louisiana

976 Utilities

Serving: 4,972,000

Data available: 2014-2019

Contaminants Found: 91

Large utilities in Louisiana

Utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Louisiana

Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 in Louisiana

Contaminants found in Louisiana above health guidelines

Contaminants found in Louisiana above legal limits