Silver Bow Creek - Butte Area Site

  • EPA is committed to protecting the health and safety of the people in Montana

    EPA works with state, local, and other federal officials to implement cleanups across the Butte Superfund Complex.

Cleanup and Progress In and Around Butte, MT...

Since 1983, EPA, in consultation with DEQ, has conducted cleanup actions across Butte and Silver Bow Creek to address decades of contamination resulting from historic mining activities. Cleanup work is ongoing.

Announcements

EPA Announces Record of Decision Amendment for Residential Soil-Lead Cleanup Level

Fact sheet, full text of the RODA, and links to the administrative record can be reviewed in the public notice.

Silver Bow Creek/Butte Area Superfund All-OUs Open House

Tuesday, December 1 from 4-7 pm at Butte Brewing Co (465 Galena St) 
Join the EPA and Montana Department of Environmental Quality for an open house to learn about Superfund cleanup in Butte.  See calendar for more information.

Remedial Design / Remedial Action Progress Meeting 

On Nov 17, 2026, from 9:00 am to 10:00 am, Atlantic Richfield, EPA, Butte Silver Bow County, Montana DEQ, and the Montana Natural Resource Damage Program invite the public to observe the Butte Priority Soils Operable Unit (BPSOU) Remedial Design/Remedial Action Progress Meeting (RDRA Progress Meeting) in a Zoom event by computer or smart phone. Because you will be watching a working meeting, there will be no method for asking questions or making statements. 

View Calendar

Background

Learn about the site background and what has been done to clean up the site.

Current Site Status

Learn about the current site status at the 7 Operable Units, and about the updated soil lead guidance.

Documents

Review publicly available site documents.

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Contact Us About the Butte Area-Silver Bow Creek Site to ask a question, provide feedback, or report a problem.
Last updated on November 2, 2026