Wyoming Environmental Profile
Comprehensive environmental data from EPA sources for Wyoming (WY)
Overview
TRI Facilities
64
Water Systems
316
Superfund Sites
3
Total Violations
713
Total Releases
21.0M lbs
Health Violations
123
water systems
Largest Polluters
View all →| # | Facility | Total Releases |
|---|---|---|
| 1 | DYNO NOBEL INC-CHEYENNE PLANT | 6.1M lbs |
| 2 | BASIN ELECTRIC LARAMIE RIVER STATION | 3.5M lbs |
| 3 | SIMPLOT PHOSPHATES LLC | 2.1M lbs |
| 4 | BLACK HILLS CORP - NEIL SIMPSON COMPLEX | 1.5M lbs |
| 5 | BASIN ELECTRIC DRY FORK STATION | 1.3M lbs |
| 6 | PACIFICORP DAVE JOHNSTON PLANT | 1.3M lbs |
| 7 | PACIFICORP JIM BRIDGER PLANT & BRIDGER COAL CO | 900.7K lbs |
| 8 | BLACKS FORK GAS PLANT | 870.7K lbs |
| 9 | STEAMBOAT PROCESSING FACILITY | 606.2K lbs |
| 10 | PACIFICORP WYODAK PLANT | 560.6K lbs |
| 11 | PACIFICORP NAUGHTON PLANT | 515.7K lbs |
| 12 | HF SINCLAIR PARCO REFINING LLC | 386.5K lbs |
| 13 | WESTERN GAS RESOURCES HILIGHT GAS PLANT | 366.5K lbs |
| 14 | CROWN BEVERAGE PACKAGING | 267.7K lbs |
| 15 | 50 BUTTES | 118.5K lbs |
| 16 | ECHO SPRINGS GAS PLANT | 109.7K lbs |
| 17 | OPAL GAS PLANT | 107.3K lbs |
| 18 | CARTER CREEK GAS PLANT | 83.9K lbs |
| 19 | US ARMY CAMP GUERNSEY TRAINING AREAS | 45.3K lbs |
| 20 | WESTERN SUGAR COOPERATIVE LOVELL FACTORY | 40.6K lbs |
Water Quality
Systems with Health Violations
| Water System | Population | Violations |
|---|---|---|
| DIXON, TOWN OF | 114 | 93 |
| LANCE CREEK WATER DISTRICT | 45 | 64 |
| BAGGS, TOWN OF | 400 | 48 |
| STONE CREEK HOA | 100 | 30 |
| COTTONWOOD ACRES | 95 | 28 |
| KEMMERER-DIAMONDVILLE JPB | 3,348 | 27 |
| LITTLE AMERICA HOTELS & RESORTS, INC- WY | 2,004 | 26 |
| YNP-OLD FAITHFUL | 7,675 | 25 |
| BUFFALO, CITY OF | 4,419 | 20 |
| COKEVILLE, TOWN OF | 535 | 17 |
| BENNOR ESTATES & IMPROVEMENT DISTRICT | 144 | 13 |
| KEY LARGO UTILITIES | 105 | 11 |
| ETHETE WATER SYSTEM | 1,950 | 10 |
| RIVERMEADOWS WATER DISTRICT | 100 | 10 |
| RED WATER DISTRIBUTION LLC | 35 | 9 |
| BROKEN WRENCH LLC | 30 | 9 |
| MILLS, CITY OF | 4,050 | 8 |
| RAWLINS WATER SUPPLY, CITY OF | 9,006 | 8 |
| POTLATCH TRAILER COURT | 70 | 8 |
| RIMROCK WATER COMPANY LLC | 365 | 7 |
Cities with Water Issues
Cheyenne
Pop: —
Laramie
Pop: —
Wheatland
Pop: —
Rawlins
Pop: —
Cody
Pop: —
Riverton
Pop: —
Casper
Pop: —
Glenrock
Pop: —
Mills
Pop: —
Newcastle
Pop: —
Gillette
Pop: —
Sheridan
Pop: —
Rock Springs
Pop: —
Evanston
Pop: —
Green River
Pop: —
Granger
Pop: —
Point Of Rocks
Pop: —
Kemmerer
Pop: —
Fort Washakie
Pop: —
Ethete
Pop: —
Superfund Sites (3)
| Site Name | Status | HRS Score |
|---|---|---|
| Baxter/Union Pacific Tie Treating | Deleted NPL Site | 37.24 |
| F.E. Warren Air Force Base | NPL Site | 39.23 |
| Mystery Bridge Rd/U.S. Highway 20 | Deleted NPL Site | 32.10 |
Largest Cities
Fe Warren Afb
Pop: —
1 facilities · 0 water systems
Cheyenne
Pop: —
8 facilities · 14 water systems
Laramie
Pop: —
2 facilities · 6 water systems
Wheatland
Pop: —
1 facilities · 1 water systems
Guernsey
Pop: —
1 facilities · 1 water systems
Rawlins
Pop: —
1 facilities · 2 water systems
Carbon
Pop: —
1 facilities · 0 water systems
Sinclair
Pop: —
1 facilities · 1 water systems
Worland
Pop: —
1 facilities · 4 water systems
Cody
Pop: —
1 facilities · 4 water systems
Frannie
Pop: —
1 facilities · 1 water systems
Lovell
Pop: —
3 facilities · 2 water systems
Riverton
Pop: —
1 facilities · 4 water systems
Casper
Pop: —
5 facilities · 14 water systems
Evansville
Pop: —
4 facilities · 1 water systems
Glenrock
Pop: —
2 facilities · 1 water systems
Douglas
Pop: —
4 facilities · 5 water systems
Mills
Pop: —
1 facilities · 4 water systems
Newcastle
Pop: —
1 facilities · 7 water systems
Gillette
Pop: —
8 facilities · 47 water systems
About This Data
This page aggregates environmental data from three EPA programs for Wyoming: the Toxic Release Inventory (TRI) for industrial chemical releases, the Safe Drinking Water Information System (SDWIS) for water quality, and the Superfund National Priorities List (NPL) for hazardous waste cleanup sites.
PlainEnviro presents this data without advocacy framing. Numbers reflect reported data and may not capture all environmental activity. For specific health or environmental concerns, contact your state environmental agency.