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EWG's Tap Water Database

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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

UtilityLocationPeople
Served
Assumption Parish Waterworks District 1Napoleonville, LA22,862
Barksdale Afb Water SystemBarksdale Afb, LA13,000
Bastrop Water SystemBastrop, LA19,686
Baton Rouge Water CompanyBaton Rouge, LA502,383
Bayou Liberty Water AssociationSlidell, LA10,500
Beauregard Water Works District #3Longville, LA21,000
Belle Chasse Water DistrictBelle Chasse, LA17,391
Blanchard Water SystemBlanchard, LA12,645
Bossier City Water SystemBossier City, LA68,094
Buckeye Water District 50Deville, LA10,287
Calcasieu Parish WW District 9 CarlyssSulphur, LA12,258
Calcasieu Parish WW District No 1Lake Charles, LA20,837
Cecilia Water CorporationCecilia, LA11,028
City of Abbeville Water SystemAbbeville, LA15,450
City of Alexandria Water SystemAlexandria, LA54,782
City of Baker Water SystemBaker, LA13,855
City of Bogalusa Water SystemBogalusa, LA14,000
City of Denham Springs Water SystemDenham Springs, LA25,725
City of Deridder Water SystemDeridder, LA13,560
City of Gonzales Water SystemGonzales, LA10,086
City of Hammond Water SystemHammond, LA21,135
City of Jennings Water SystemJennings, LA10,300
City of Lake Charles Water SystemLake Charles, LA80,000
City of Opelousas Water SystemOpelousas, LA17,561
City of Pineville Water SystemPineville, LA20,315
City of Plaquemine Water SystemPlaquemine, LA14,043
Covington Water SupplyCovington, LA14,700
Crowley Water System (LAWCO)Baton Rouge, LA19,000
East Jefferson Waterworks District 1Jefferson, LA243,782
Eden Isles Water SupplySlidell, LA10,155
More

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.

UtilityLocationPeople
Served
Violation
Points
Village of Calvin Water SystemCalvin, LA591154
Oil City Water WorksOil City, LA2,115122
Litroe Water SystemMarion, LA369111
Village of Georgetown Water SupplyGeorgetown, LA302108
Eros Water SystemEros, LA345105
Concord Water SystemMarion, LA426105
Ozone Pine SubdivisionSlidell, LA75103
North Lake St. John Water SystemGilbert, LA90102
Linville-haile Water SystemMarion, LA1,635101
Jones Mcginty Water SystemJones, LA80197
Belmont Waterworks Inc.Belmont, LA2,80596
Vixen Water System WestWest Monroe, LA28896
River Ridge Estates Water SystemBreaux Bridge, LA7595
Lake St. John Waterworks District 1Ferriday, LA1,92095
Town of Plain Dealing Water SystemPlain Dealing, LA2,73395
Ebarb Wwks District # 1 - N Ebarb/belmontZwolle, LA45095
Town of Ferriday Water SystemFerriday, LA4,19395
Pleasant Hills-crossroads Water SystemsJoyce, LA84095
Cadeville Water DistrictWest Monroe, LA3,15095
Fairview Union Water SystemCampti, LA2,20595
Sardis Water SystemFarmerville, LA1,40495
Union Parish Waterworks District 1Farmerville, LA1,62693
Dubach Water SystemDubach, LA1,21893
Wards Chapel Water SystemFarmerville, LA1,35091
Randolph Water SystemJunction City, LA22290
Marion Water SystemMarion, LA1,14690
Town of Tullos Water SystemTullos, LA79286
Bel-di-gil Water SystemBelcher, LA1,13285
Bobs ApartmentsSlidell, LA8785
Ebarb Wwks District # 1 - Aimwell AreaZwolle, LA5,52985

Large 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.

UtilityLocationPeople
Served
Violation
Points
West Monroe Water SystemWest Monroe, LA15,93020
Natchitoches Water SystemNatchitoches, LA30,00011
Assumption Parish Waterworks District 1Napoleonville, LA22,8626
Houma Water Treatment Service AreaHouma, LA31,5606
Zachary Water SystemZachary, LA22,7285
Water Works District #1 of VermilionMaurice, LA21,3005
City of Opelousas Water SystemOpelousas, LA17,5611
Sulphur Water SystemSulphur, LA20,4101

Contaminants found in Louisiana above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
8004,620,7018264,676,117

Chloroform
7624,490,0157764,560,107

Bromodichloromethane
7644,013,1557644,013,155

Dibromochloromethane
7383,904,7947403,961,188

Dichloroacetic acid
5093,710,0145614,065,277

Trichloroacetic acid
4893,062,7095133,950,465

Chromium (hexavalent)
1042,426,1241313,257,369

Arsenic
1571,875,5841571,875,584

Radium-226
1361,585,8921451,608,118

Nitrate and nitrite
1551,583,4764933,765,301

Bromoform
4121,526,5634522,289,447

Radium-228
1131,163,9591131,163,959

Chlorate
28954,161862,150,872

Uranium
33743,3181212,099,707

Manganese
71545,6333402,534,981

Aluminum
18317,1871071,882,156

1,2-Dichloroethane
4250,5404250,540

Nitrate
4219,9934219,993

Carbon tetrachloride
1191,1311191,131

Cadmium
936,173936,173

Tetrachloroethylene (perchloroethylene)
119,686119,686

Barium
918,6513853,459,634

Di(2-ethylhexyl) phthalate
410,758971,710,472

Atrazine
47,89910575,715

Glyphosate
26,09326,093

Chloromethane
24,57423182,390

1,2-Dibromo-3-chloropropane (DBCP)
44,13644,136

Carbofuran
13061306

Contaminants found in Louisiana above legal limits

Contaminant# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
6885,388

Haloacetic acids (HAA5)
1645,668

Arsenic
31,056