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EWG's Tap Water Database — 2019 UPDATE

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Wyoming

  • 313 Utilities

  • Serving: 460,000

  • Data available: 2012-2017

  • Contaminants Found: 56

 

EWG's drinking water quality report for Wyoming shows results of tests conducted by the water utilities in Wyoming and provided to EWG by the US EPA Region 8.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

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

Large utilities in Wyoming

UtilityLocationPeople
Served
Cheyenne Board Public UtilitiesCheyenne, WY58,182
City of CasperCasper, WY57,500
City of EvanstonEvanston, WY12,000
City of GilletteGillette, WY30,121
City of Green RiverGreen River, WY10,500
City of LaramieLaramie, WY28,000
City of RivertonRiverton, WY10,001
City of Rock SpringsRock Springs, WY19,050
City of SheridanSheridan, WY15,500
South Cheyenne Water and Sewer DistrictCheyenne, WY10,000

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

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
Manville, Town OfManville, WY9785
Sweetwater Improvement & Service DistricNewcastle, WY4684
Big Valley & Crossed Arrows Imp DistrictMeeteetse, WY6746
Bear River Regional Joint PowersBear River, WY1,20037
Alta Community PipelineAlta, WY4022
Ward Creek Landowners Assoc.Rozet, WY7221
Leisure Valley Inc/ Star Valley Rv ParkThayne, WY43320
Rivermeadows Water DistrictJackson, WY10020
Rozet Ranchettes Improvement & Serv DistrictGillette, WY5120
Wheatland, Town OfWheatland, WY3,62717
Wamsutter, Town OfWamsutter, WY45014
West End Water DistrictNewcastle, WY22514
Medicine Bow, Town OfMedicine Bow, WY28211
Centennial Water and SewerLaramie, WY10011
Edgerton, Town OfEdgerton, WY19511
South Park Village SubdivisionTeton Village, WY7010
Kemmerer-diamondville JpbKemmerer, WY3,36710
Jackson, Town OfJackson, WY8,0009
Warm Springs Water DistrictDubois, WY588
Rawlins Water Supply, City OfRawlins, WY9,7498
Hanna, Town OfHanna, WY8418
Big Piney, Town OfBig Piney, WY5527
Teton Shadows Home Owners AssociationJackson, WY1007
Skyline Village Mobile Home PkRock Springs, WY6907
Alpine, Town OfAlpine, WY8287
Glendo, Town OfGlendo, WY2056
Lakeview Mobile Home ParkGillette, WY366
Bar Y Estates/west Gros Ventre Butte WaterTeton Village, WY2706
Hidden Hills Mobile Home ParkFarmington Hills, WY3206
Vet Adm Medical CenterSheridan, WY4706

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

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
City of LaramieLaramie, WY28,0001

Contaminants found in Wyoming above health guidelines

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

Total trihalomethanes (TTHMs)
204427,986195424,521

Radium, combined (-226 & -228)
273417,904250408,391

Bromodichloromethane
180330,944170327,379

Chloroform
153311,525161321,418

Dichloroacetic acid
118296,261118305,706

Dibromochloromethane
166292,790156289,225

Uranium
137289,703135314,900

Nitrate and nitrite
165289,279236368,748

Chromium (hexavalent)
48252,03346260,366

Trichloroacetic acid
103248,67797289,293

Bromate
43135,78924127,827

Arsenic
92112,53692112,536

Nitrate
23108,71020107,042

Bromoform
7288,197109229,571

Chlorate
1161,06535226,163

Benzene
18,00018,000

Thallium
145,195145,195

Cadmium
41,19441,194

Tetrachloroethylene (perchloroethylene)
24552455

Antimony
19067,135

Trichloroethylene
155155

Contaminants found in Wyoming above legal limits

Contaminant# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
12,000

Radium, combined (-226 & -228)
3357

Arsenic
1150

Uranium
197