New Online Map: Dirt Alert

Screenshot of the Dirt Alert Map showing South Puget Sound and the concentration of contaminants northeast and southwest of the smelter site

The home page of Ecology's new online map — Dirt Alert.

This month we launched a new online Dirt Alert map. The map focuses on the Tacoma Smelter Plume, but also covers areas in the state where soil contamination may exist from arsenic-related contamination:

By putting both information and data in one place, we hope to make it easier for residents to find out about arsenic-related soil contamination and resources. The new web application replaces two older, online maps, the Arsenic in Soil Database and the Everett and Tacoma Smelter Search.

A smart phone showing how the Dirt Alert Map can focus on a single property within the plume

The new map is mobile friendly, making it easy to access from your home computer or your phone.  

New look — Same data

The upgrade means faster downloading times and the ability to access the map by phone. The map also visually displays soil sampling data. Within the Tacoma Smelter Plume and Everett Smelter cleanup area, the map provides access to:

  • Soil sampling maps
  • Soil replacement paperwork

For yards outside of the Everett Smelter cleanup area or Tacoma Smelter Plume Yard Program service area, the map links to our Healthy Actions webpage that teaches you how to protect yourself from arsenic and lead in dirt, and provides contacts for more information.


If you have questions or comments about the map, please call the project line at 360-407-7688 and press 2 for Tacoma Smelter Plume. You can also email the Yard Program Outreach Coordinator at

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