Louisiana

980 Utilities
Serving: 4,964,000
Data available: 2012-2017
Contaminants Found: 88

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	17,058
Baton Rouge Water Company	Baton Rouge, LA	527,067
Bayou Liberty Water Association	Slidell, LA	10,500
Beauregard Water Works District #3	Longville, LA	21,600
Belle Chasse Water District	Belle Chasse, LA	17,391
Blanchard Water System	Blanchard, LA	12,900
Bossier City Water System	Bossier City, LA	68,094
Brownville Water System	West Monroe, LA	10,872
Buckeye Water District 50	Deville, LA	10,287
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	13,560
City of Gonzales Water System	Gonzales, LA	10,086
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	80,000
City of Opelousas Water System	Opelousas, LA	17,561
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 2016 to March 2019 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
S and J Rv Park	Slidell, LA	87	148
Oil City Water Works	Oil City, LA	2,199	136
Ozone Pine Subdivision	Slidell, LA	75	129
Union Parish Waterworks District 1	Farmerville, LA	1,626	125
Vixen Water System West	Chatham, LA	288	122
Fairview Union Water System	Campti, LA	2,205	118
Jones Mcginty Water System	Jones, LA	801	107
River Ridge Estates Water System	Breaux Bridge, LA	75	106
Town of Plain Dealing Water System	Plain Dealing, LA	2,733	104
Ebarb Wwks District # 1 - Aimwell Area	Zwolle, LA	6,186	104
Town of Tullos Water System	Tullos, LA	792	101
Randolph Water System	Junction City, LA	222	101
Village of Sikes Water System	Sikes, LA	690	99
Lake St. John Waterworks District 1	Ferriday, LA	1,920	99
Marion Water System	Marion, LA	1,146	98
Downsville Water System	Downsville, LA	216	94
Chatham Water System	Chatham, LA	1,137	94
Joyce Water Supply	Covington, LA	474	89
Franklin Water Supply	Franklin, LA	8,500	87
Point Wilhite Ws	Downsville, LA	1,950	84
Clearview Mobile Home Park	Lake Charles, LA	141	83
Holmesville Water System	Downsville, LA	2,310	82
Cameron Parish Water Works District 9	Grand Chenier, LA	1,376	82
Red Hill Waterworks Inc.	Georgetown, LA	1,872	81
Town of Ridgecrest Water Supply	Ridgecrest, LA	683	80
Miles Mobile Home Park	Lake Charles, LA	57	80
Sabine Parish Water District 1	Many, LA	6,141	79
Country Estates Water System North	West Monroe, LA	597	78
Town of Clayton Water System	Clayton, LA	723	76
Indian Village Water System	Calhoun, LA	1,686	73

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Louisiana

Utility	Location	People Served	Violation Points
Assumption Parish Waterworks District 1	Napoleonville, LA	22,862	42
St Bernard Parish Waterworks	Chalmette, LA	44,000	27
City of Abbeville Water System	Abbeville, LA	15,012	22
Barksdale Afb Water System	Barksdale Afb, LA	13,000	21
City of Alexandria Water System	Alexandria, LA	54,782	21
Belle Chasse Water District	Belle Chasse, LA	17,391	16
Bastrop Water System	Bastrop, LA	17,058	15
Gretna Waterworks	Gretna, LA	17,802	11
Tangipahoa Parish Water District	Hammond, LA	58,365	10
Zachary Water System	Zachary, LA	23,469	10
Blanchard Water System	Blanchard, LA	12,900	10
Village of Parks Water System	Parks, LA	12,050	10
Lakeshore Swartz Water System	West Monroe, LA	11,330	10
City of Opelousas Water System	Opelousas, LA	17,561	9
Houma Water Treatment Service Area	Houma, LA	31,560	8
St John Water District 3	Laplace, LA	29,872	7
Water Works District #1 of Vermilion	Maurice, LA	21,300	6
City of Jennings Water System	Jennings, LA	10,365	5
City of Plaquemine Water System	Plaquemine, LA	14,043	5
Walker Water System	Walker, LA	13,530	5
Calcasieu Parish WW District 9 Carlyss	Sulphur, LA	13,500	5
Mandeville Water Supply	Mandeville, LA	13,209	5
Schriever Water Treatment Service Area	Houma, LA	97,152	4
City of Baker Water System	Baker, LA	13,855	4
City of Deridder Water System	Deridder, LA	13,560	2
New Orleans Carrollton Waterworks	New Orleans, LA	291,044	1
Thibodaux Waterworks	Thibodaux, LA	15,810	1
Bayou Liberty Water Association	Slidell, LA	10,500	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)		915	4,895,931			918	4,913,165
Total trihalomethanes (TTHMs)		906	4,895,353			919	4,936,714
Chloroform		828	4,739,291			899	4,909,235
Dichloroacetic acid		799	4,708,712			864	4,835,168
Trichloroacetic acid		742	4,601,865			760	4,628,219
Bromodichloromethane		861	4,244,602			862	4,244,762
Dibromochloromethane		831	4,136,516			842	4,237,088
Dibromoacetic acid		758	3,947,923			767	4,058,558
Arsenic		421	3,341,352			411	3,337,748
Radium, combined (-226 & -228)		535	3,231,669			533	3,488,742
Chromium (hexavalent)		99	2,406,824			117	3,261,420
Bromoform		455	1,867,612			624	3,407,453
Nitrate and nitrite		151	1,614,496			683	4,402,610
Uranium		23	943,196			73	1,369,847
Chlorate		28	930,575			76	2,130,706
Manganese		192	926,232			831	3,852,889
Aluminum		18	310,512			281	3,330,877
Nitrate		5	221,316			10	229,719
Atrazine		6	92,685			11	658,905
Carbon tetrachloride		9	90,359			9	90,359
Cadmium		16	53,418			16	53,418
Thallium		6	36,594			6	36,594
Barium		14	34,326			753	4,489,360
Benzo[a]pyrene		10	31,678			16	762,028
Tetrachloroethylene (perchloroethylene)		3	22,060			3	22,060
Di(2-ethylhexyl) phthalate		4	15,925			204	2,274,134
1,2-Dichloroethane		4	11,734			6	258,966
Antimony		1	10,872			15	113,351
Glyphosate		2	6,228			3	6,339
Chloromethane		2	4,603			18	158,862
Hexachlorobenzene (HCB)		3	4,139			3	4,139
1,2-Dibromo-3-chloropropane (DBCP)		3	2,946			3	2,946
Beryllium		1	1,294			17	86,295
Carbofuran		1	306			5	533,655
Vinyl chloride		1	160			1	160

Contaminants found in Louisiana above legal limits

Contaminant	People Served
Total trihalomethanes (TTHMs)	78	109,053
Arsenic	10	42,912
Radium, combined (-226 & -228)	3	22,419
Haloacetic acids (HAA5)	17	19,886

Louisiana

980 Utilities

Serving: 4,964,000

Data available: 2012-2017

Contaminants Found: 88

Large utilities in Louisiana

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Louisiana

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Louisiana

Contaminants found in Louisiana above health guidelines

Contaminants found in Louisiana above legal limits