Water Quality > Ground & Surface Water Quality Standards > Surface Water Quality Standards > Approved Surface Water Quality Standards
On August 1, 2016, Ecology adopted revisions to Water Quality Standards for Surface Waters of the State of Washington, Chapter 173-201A WAC and sent it to the federal Environmental Protection Agency (EPA) for review.
EPA’s review, and partial approval, of our adopted rule:
Updates to the surface water quality standards
Contact us for more information
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.htm