Menu

EWG's Tap Water Database

Donate

Wyoming

  • 314 Utilities

  • Serving: 460,000

  • Data available: 2010-2015

  • Contaminants Found: 53

 

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 October 2015 to September 2018 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, WY9776
Little America Hotels & Resorts, Inc- WyLittle America, WY2,00076
Lance Creek Water DistrictLance Creek, WY4536
Owl Creek Water DistrictThermopolis, WY6030
Sweetwater Improvement & Service DistricNewcastle, WY4629
Rozet Ranchettes Improvement & Serv DistrictGillette, WY5120
Potlatch Trailer CourtTorrington, WY7020
Albin, Town OfAlbin, WY12018
Wheatland, Town OfWheatland, WY3,62715
Southfork Estates I & SDGillette, WY13815
Jeffrey City Water & Sewer DistrictJeffrey City, WY4010
Leisure Valley Inc/ Star Valley Rv ParkThayne, WY4339
Evergreen Properties, LlcCheyenne, WY509
Cozy Mobile Home ParkRiverton, WY2007
Rawlins Water Supply, City OfRawlins, WY9,7497
Snake River Mobile Home ParkJackson, WY657
Rivermeadows Water DistrictJackson, WY1006
Beullah Land Water SystemSioux Falls, WY256
Mountain Village Park IncorporatedBig Piney, WY1506
Hudson, Town OfRiverton, WY4606
Wamsutter, Town OfWamsutter, WY4506
Turnerville Water and Sewer DistrictThayne, WY905
Lakeview Mobile Home ParkGillette, WY365
Moorcroft, Town OfGillette, WY8075
Cowley, Town OfCowley, WY5735
Dixon, Town OfBaggs, WY925
Lucerne Water and Sewer DistrictThermopolis, WY3005
Jackson, Town OfJackson, WY8,0004
Lakeview Improvement & Service DistrictMills, WY504
B&k Mobile Home ParkRiverton, WY2003

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

Contaminants found in Wyoming above health guidelines

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

Total trihalomethanes (TTHMs)
133403,440139414,426

Radium-228
215369,000226399,005

Radium-226
177346,887185349,892

Bromodichloromethane
120315,619120315,619

Chloroform
116304,732116304,732

Dichloroacetic acid
102293,373103293,720

Uranium
112289,940127316,870

Dibromochloromethane
103266,849103266,849

Chromium (hexavalent)
45251,03446261,035

Trichloroacetic acid
88244,92490255,020

Nitrate and nitrite
137204,603201260,834

Bromate
26128,76526128,765

Nitrate
17105,78417105,784

Bromoform
4191,02860197,048

Chlorate
1161,06535226,163

Arsenic
1323,4441323,444

Thallium
18301830

Tetrachloroethylene (perchloroethylene)
14001400

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