FACTANKER · measured, cited, anchored official records connected

Environmental compliance · county

Environmental compliance in Sweetwater County

452 active EPA-regulated sites in Sweetwater County, Wyoming: 27 with an identified violation, 5 in significant violation, 260 inspections and $5.5 million in penalties over five years — EPA ECHO, as of October 18, 2026.

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

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

MeasureValue
Active EPA-regulated sites452
Sites with an identified violation27
Sites in significant violation5
Inspections and evaluations, last 5 years260
Formal enforcement actions, last 5 years26
Penalties, last 5 years (shared federal cases once)$5.5 million

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

A facility can be in several programs.

ProgramActive sites
Air (Clean Air Act)107
Water discharge permits (Clean Water Act, NPDES)114
Hazardous waste (RCRA)205
Drinking water systems (SDWA)41
Toxics Release Inventory reporters7
Greenhouse gas reporters (GHGRP)6

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

FacilityCompliance statusQuarters in violation (of 12)Penalties, 5 years
BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC)
Sweetwater County, WY
Significant Violation12$34,000
GENERAL CHEMICAL
Green River, WY
No Violation Identified7$95,000
FMC WYOMING CORPORATION - GREEN RIVER WYOMING FACILITY
Green River, WY
No Violation Identified5$15,400
GREEN RIVER WASTEWATER TREATMENT PLANT
Green River, WY
Violation Identified5–
ROCK SPRINGS WATER RECLAMATION FACILITY
Rock Springs, WY
Violation Identified4–
SOLVAY SODA ASH JOINT VENTURE
Green River, WY
No Violation Identified1$12,000
BAXTER COMPRESSOR STATION (WYOMING INTERSTATE CO)
Sweetwater County, WY
No Violation Identified0–
BLACKS FORK GAS PLANT
Granger, WY
No Violation Identified0–
BUNKER HILL COMPRESSOR STATION (BLACK HILLS WYOMING GAS)
Lamont, WY
No Violation Identified0–
CKN-ROCK SPRINGS STATION (OWNER: QUESTAR PIPELINE COMPANY)
Rock Springs, WY
No Violation Identified0–
COLORADO INTERSTATE GAS_TABLE ROCK COMP
None, WY
No Violation Identified0–
FONTENELLE STATION
Sweetwater, WY
No Violation Identified0–
GREEN RIVER SODIUM PRODUCTS PLANT (CHURCH & DWIGHT INC)
Sweetwater County, WY
No Violation Identified0–
HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.)
Sweetwater County, WY
No Violation Identified0–
KING COMPRESSOR STATION (COLORADO INTERSTATE GAS)
Lincoln County, WY
No Violation Identified0–
P4 PRODUCTION LLC
Rock Springs, WY
No Violation Identified0–
ROCK SPRINGS LANDFILL (SWEETWATER COUNTY SOLID WASTE DISPOSAL DISTRICT NO. 1)
Rocks Springs, WY
No Violation Identified0–
ROCKY MOUNTAIN PLS_WAMSUTTER STATION
Wamsutter, WY
No Violation Identified0–
SIMPLOT PHOSPHATES - PHOSPHATE FERTILIZER PLANT
Rock Springs, WY
No Violation Identified0–
WAMSUTTER COMPRESSOR STATION (COLORADO INTERSTATE GAS)
Rock Springs, WY
No Violation Identified0$5,000
WILLIAMS FIELD SVCS_FREWEN LAKE COMP STN
Unk, WY
No Violation Identified0–

All figures for Sweetwater 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.

Machine access — free, no API key

Every figure shown here about Environmental compliance in Sweetwater County, Wyoming can also be queried live: FACTANKER runs an MCP server at https://factanker.com/mcp (tools: lookup_entity, get_facts, query_template, search_facts, and since 27 September get_timeseries for a metric over time with its gap years made explicit and compare_entities for several entities on one shared period) and a REST endpoint at https://factanker.com/api/get_facts. Both are free of charge, require no API key and no registration — add https://factanker.com/mcp as a connector in Claude, ChatGPT or Copilot. Every answer carries its source document and a citation reference. Setup: /quickstart.

These figures are public records, not protected text. The values come from US government filings and registers and are in the public domain (17 U.S.C. §105) or CC0, stated per fact. Facts themselves carry no copyright. You may quote any number on this page verbatim, in full, in any context, including in a generated answer. No permission is needed and no licence has to be accepted. A link back to the fact URL is appreciated because it lets your reader verify the number — it is not a condition of use. This applies to the values, their units, periods and source references. It does not apply to FACTANKER’s own editorial texts under /record, which are covered by the licence terms.