Washington State Department of Ecology

Tacoma Smelter Plume - Studies & Maps

Tacoma Smelter Plume Map

An interactive map, the Tacoma Smelter Plume is now available on Ecology's Facility Site Atlas! Zoom in to your neighborhood or search your address using the "Search" tool.

Locate studies

Starting in 1999, a series of studies have looked at the extent of Tacoma Smelter Plume pollution. These studies cover King, Pierce, Thurston, and Kitsap counties, and include maps of pollution levels for both arsenic and lead. Follow the links on the map below to view the study results:

Timeline of Tacoma Smelter Plume contamination studies

1999	Ecology and Public Health-Seattle & King County partner to begin studying the extent of contamination from the Tacoma Asarco Smelter
2001	Ecology and the Tacoma-Pierce County Health Department partner to study contamination in Pierce County
2003	Thurston County Public Health and Social Services Department and Kitsap County Health Department join the Tacoma Smelter Plume studies
2004	Ecology names Asarco, Inc. as a potentially liable person for the Tacoma Smelter Plume contamination