Louisiana

992 Utilities
Serving: 4,831,000
Data available: 2010-2015
Contaminants Found: 102

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	19,686
Baton Rouge Water Company	Baton Rouge, LA	502,383
Bayou Liberty Water Association	Slidell, LA	10,500
Beauregard Water Works District #3	Longville, LA	21,000
Belle Chasse Water District	Belle Chasse, LA	17,391
Blanchard Water System	Blanchard, LA	12,645
Bossier City Water System	Bossier City, LA	68,094
Buckeye Water District 50	Deville, LA	10,287
Calcasieu Parish WW District 9 Carlyss	Sulphur, LA	12,258
Calcasieu Parish WW District No 1	Lake Charles, LA	20,837
Cecilia Water Corporation	Cecilia, LA	11,028
City of Abbeville Water System	Abbeville, LA	15,450
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	10,300
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
Covington Water Supply	Covington, LA	14,700
Crowley Water System (LAWCO)	Baton Rouge, LA	19,000
East Jefferson Waterworks District 1	Jefferson, LA	243,782
Eden Isles Water Supply	Slidell, LA	10,155

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 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	154
Oil City Water Works	Oil City, LA	2,115	122
Litroe Water System	Marion, LA	369	111
Village of Georgetown Water Supply	Georgetown, LA	302	108
Eros Water System	Eros, LA	345	105
Concord Water System	Marion, LA	426	105
Ozone Pine Subdivision	Slidell, LA	75	103
North Lake St. John Water System	Gilbert, LA	90	102
Linville-haile Water System	Marion, LA	1,635	101
Jones Mcginty Water System	Jones, LA	801	97
Belmont Waterworks Inc.	Belmont, LA	2,805	96
Vixen Water System West	West Monroe, LA	288	96
River Ridge Estates Water System	Breaux Bridge, LA	75	95
Lake St. John Waterworks District 1	Ferriday, LA	1,920	95
Town of Plain Dealing Water System	Plain Dealing, LA	2,733	95
Ebarb Wwks District # 1 - N Ebarb/belmont	Zwolle, LA	450	95
Town of Ferriday Water System	Ferriday, LA	4,193	95
Pleasant Hills-crossroads Water Systems	Joyce, LA	840	95
Cadeville Water District	West Monroe, LA	3,150	95
Fairview Union Water System	Campti, LA	2,205	95
Sardis Water System	Farmerville, LA	1,404	95
Union Parish Waterworks District 1	Farmerville, LA	1,626	93
Dubach Water System	Dubach, LA	1,218	93
Wards Chapel Water System	Farmerville, LA	1,350	91
Randolph Water System	Junction City, LA	222	90
Marion Water System	Marion, LA	1,146	90
Town of Tullos Water System	Tullos, LA	792	86
Bel-di-gil Water System	Belcher, LA	1,132	85
Bobs Apartments	Slidell, LA	87	85
Ebarb Wwks District # 1 - Aimwell Area	Zwolle, LA	5,529	85

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Louisiana

Utility	Location	People Served	Violation Points
West Monroe Water System	West Monroe, LA	15,930	20
Natchitoches Water System	Natchitoches, LA	30,000	11
Assumption Parish Waterworks District 1	Napoleonville, LA	22,862	6
Houma Water Treatment Service Area	Houma, LA	31,560	6
Zachary Water System	Zachary, LA	22,728	5
Water Works District #1 of Vermilion	Maurice, LA	21,300	5
City of Opelousas Water System	Opelousas, LA	17,561	1
Sulphur Water System	Sulphur, LA	20,410	1

Contaminants found in Louisiana above health guidelines

	Found above health guidelines			Found
Contaminant	# of Utilities	People Served		# of Utilities	People Served
Total trihalomethanes (TTHMs)		800	4,620,701			826	4,676,117
Chloroform		762	4,490,015			776	4,560,107
Bromodichloromethane		764	4,013,155			764	4,013,155
Dibromochloromethane		738	3,904,794			740	3,961,188
Dichloroacetic acid		509	3,710,014			561	4,065,277
Trichloroacetic acid		489	3,062,709			513	3,950,465
Chromium (hexavalent)		104	2,426,124			131	3,257,369
Arsenic		157	1,875,584			157	1,875,584
Radium-226		136	1,585,892			145	1,608,118
Nitrate and nitrite		155	1,583,476			493	3,765,301
Bromoform		412	1,526,563			452	2,289,447
Radium-228		113	1,163,959			113	1,163,959
Chlorate		28	954,161			86	2,150,872
Uranium		33	743,318			121	2,099,707
Manganese		71	545,633			340	2,534,981
Aluminum		18	317,187			107	1,882,156
1,2-Dichloroethane		4	250,540			4	250,540
Nitrate		4	219,993			4	219,993
Carbon tetrachloride		11	91,131			11	91,131
Cadmium		9	36,173			9	36,173
Tetrachloroethylene (perchloroethylene)		1	19,686			1	19,686
Barium		9	18,651			385	3,459,634
Di(2-ethylhexyl) phthalate		4	10,758			97	1,710,472
Atrazine		4	7,899			10	575,715
Glyphosate		2	6,093			2	6,093
Chloromethane		2	4,574			23	182,390
1,2-Dibromo-3-chloropropane (DBCP)		4	4,136			4	4,136
Carbofuran		1	306			1	306

Contaminants found in Louisiana above legal limits

Contaminant	People Served
Total trihalomethanes (TTHMs)	68	85,388
Haloacetic acids (HAA5)	16	45,668
Arsenic	3	1,056

Louisiana

992 Utilities

Serving: 4,831,000

Data available: 2010-2015

Contaminants Found: 102

Large utilities in Louisiana

Utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Louisiana

Large utilities that accumulated/accrued the most violation points as of October 2015 to September 2018 in Louisiana

Contaminants found in Louisiana above health guidelines

Contaminants found in Louisiana above legal limits