NOTICE: Ecology's web applications will be unavailable Wednesday, Nov. 29 from 5:30 to 7:30pm, for scheduled maintenance.

Lead in Suspended Particulate Matter

Ecology began a monitoring program to assess temporal changes in lead levels of rivers and lakes in Washington State in 2008. Suspended particulate matter samples are collected from 15 monitoring sites across the state in the spring and fall every year.

See the Project Plan and Addendum #1, Addendum #2, and Addendum #3 for more information.



Click on map to retrieve Lead Suspended Particulate data from the EIM database.