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Environmental compliance · county

Environmental compliance in Campbell County

488 active EPA-regulated sites in Campbell County, Wyoming: 28 with an identified violation, 8 in significant violation, 325 inspections and $5.3 million in penalties over five years — EPA ECHO, as of October 18, 2026.

Cite: FACTANKER, https://factanker.com/us/wy/campbell-county/environmental-compliance

How many facilities in Campbell County, Wyoming are regulated by the EPA, and how many are in violation (as of October 18, 2026)?

MeasureValue
Active EPA-regulated sites488
Sites with an identified violation28
Sites in significant violation8
Inspections and evaluations, last 5 years325
Formal enforcement actions, last 5 years10
Penalties, last 5 years (shared federal cases once)$5.3 million

How many active facilities in Campbell County, Wyoming fall under each EPA program?

A facility can be in several programs.

ProgramActive sites
Air (Clean Air Act)100
Water discharge permits (Clean Water Act, NPDES)155
Hazardous waste (RCRA)209
Drinking water systems (SDWA)65
Toxics Release Inventory reporters8
Greenhouse gas reporters (GHGRP)6

Which large facilities in Campbell County, Wyoming does the EPA track, and are they in violation?

FacilityCompliance statusQuarters in violation (of 12)Penalties, 5 years
GILLETTE WWTF
Gillette, WY
No Violation Identified3–
50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC)
Campbell County, WY
No Violation Identified0–
ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES)
Campbell County, WY
No Violation Identified0–
ARVADA GENERATION STATION
Campbell County, WY
No Violation Identified0–
BARBER CREEK GENERATION STATION
Campbell County, WY
No Violation Identified0–
BASIN ELECTRIC POWER COOPERATIVE-DRY FORK STATION
Gillette, WY
No Violation Identified0–
BLACK HILLS CORP - NEIL SIMPSON COMPLEX
Gillette, WY
No Violation Identified0–
BOLT 35 COMPRESSOR STATION
Campbell, WY
No Violation Identified0–
CAMPBELL COUNTY LANDFILL NO. 2
Campbell County, WY
No Violation Identified0–
CROSSBOW COMPRESSOR STATION
Campbell, WY
No Violation Identified0–
HARTZOG GENERATION STATION
Campbell County, WY
No Violation Identified0–
HATCHET COMPRESSOR STATION
Campbell, WY
No Violation Identified0–
HILIGHT GAS PLANT
Gillette, WY
No Violation Identified0–
LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES)
Campbell County, WY
No Violation Identified0–
MARY'S DRAW (THUNDER CREEK GAS SERVICES)
Campbell County, WY
No Violation Identified0–
MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC)
Campbell County, WY
No Violation Identified0–
THUNDER CREEK GAS SVCS-HOUSE CREEK CS
Unk, WY
No Violation Identified0–
WGR ASSET MORGAN DRAW/CRENSHA HILL COMP
Campbell, WY
No Violation Identified0–
WGR OPERATING BISON TREATING FACILITY
Unknown, WY
No Violation Identified0–
WYODAK PLANT
Gillette, WY
No Violation Identified0–

All figures for Campbell County · Wyoming · United States

EPA Enforcement and Compliance History Online (ECHO), weekly national export. Counts cover active sites in the Facility Registry Service; inspections, formal actions and penalties cover the last five years, quarters in violation the last three years. The EPA attributes a case that covers several facilities to each of them; area penalty totals here count an amount shared through the same federal case once, facility figures show the amount attributed to that facility. Large facilities are Clean Air Act majors, Clean Water Act majors and large hazardous waste generators or handlers. Source record.

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