Collecting a water sample for testing.  Photo courtesy of WA Dept. of EcologyWater Quality

Data Quality Assurance

Related Information


Focus On Clean Water: January 2006 Update (Ecology Publication)

Impaired Waters [303(d) List] Information

305(b) Report

Water Quality Improvement Projects (Total Maximum Daily Loads) Information

Environmental Information Management (EIM)

Environmental Assessment Program


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Last updated September 2008