Environmental compliance
Environmental compliance in Montana
7,759 active EPA-regulated sites in Montana: 611 with an identified violation, 93 in significant violation, $20.6 million in penalties over five years — EPA ECHO, as of October 18, 2026, by county and facility.
How many facilities in Montana are regulated by the EPA, and how many are in violation (as of October 18, 2026)?
How many active facilities in Montana fall under each EPA program?
A facility can be in several programs.
| Program | Active sites |
|---|---|
| Air (Clean Air Act) | 205 |
| Water discharge permits (Clean Water Act, NPDES) | 4,061 |
| Hazardous waste (RCRA) | 1,798 |
| Drinking water systems (SDWA) | 1,867 |
| Toxics Release Inventory reporters | 61 |
| Greenhouse gas reporters (GHGRP) | 27 |
Which counties in Montana have the most facilities in significant violation of EPA rules?
Which large facilities in Montana are in significant violation of EPA rules?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| GREAT FALLS RENEWABLE DIESEL PLANT Great Falls, MT | Significant Violation | 12 | $409,709 |
| YELLOWSTONE ENERGY POWER PLANT Billings, MT | Significant Violation | 12 | – |
Which large facilities in Montana had the highest environmental penalties in the last five years?
| Facility | Compliance status | Quarters in violation (of 12) | Penalties, 5 years |
|---|---|---|---|
| GREAT FALLS RENEWABLE DIESEL PLANT Great Falls, MT | Significant Violation | 12 | $409,709 |
| CHS INC LAUREL REFINERY Laurel, MT | Violation Identified | 11 | $240,000 |
| CHS INC Laurel, MT | No Violation Identified | 5 | $138,600 |
| CITY OF HELENA WWTP Helena, MT | No Violation Identified | 4 | $20,000 |
| LEWISTOWN WWTP Lewistown, MT | No Violation Identified | 5 | $6,300 |
| CITY OF MISSOULA WWTF NO EXPOSURE Missoula, MT | Violation Identified | 3 | $1,400 |
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 Montana, EPA ECHO October 18, 2026 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.