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Title

Water Quality Program Policy 1-11 Chapter 1: Washington's Water Quality Assessment Listing Methodology to Meet Clean Water Act Requirements

 
Publication number Date Published Date Revised
18-10-035November 2018March 2023
VIEW NOW Water Quality Program Policy 1-11 Chapter 1: Washington's Water Quality Assessment Listing Methodology to Meet Clean Water Act Requirements (Number of pages: 137) (Publication Size: 2299KB)




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Author(s) Water Quality Program
Description This policy describes the methodologies for how assessment units(AU's) will generally be assessed for each water quality standard parameter (for example, bacteria or dissolved oxygen) and then placed in one of five categories, ranging from waters that meet tested standards (Category 1)to impaired waters (Category 5). The different listing categories described in this WQA policy identify the status of the AU for each parameter and may signify future actions need to improve or protect water quality.
NOTES An updated version was posted on March 27, 2023 after public review.
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Keywords impaired, Water quality assessment, regulatory compliance, public health, 305(b), nonpoint, clean water, guidance, decisions, 303(d), quality assurance, assessment, Ecology, standards, water quality standards, non point, dissolved oxygen, Environmental Protection Agency, EPA, clean water act, bacteria
WEB PAGE Water Quality Assessment & Policy 1-11
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Response to Comments, Water Quality Program Policy 1-11, Chapter 1, 2022 Revisions

Water Quality Policy 1-11 Chapter 2 - Ensuring Credible Data for Water Quality Management

Water Quality Program Policy 1-11 Chapter 1: Response to Comments July 2020

Water Quality Program Policy 1-11 Chapter 1: October 2018 Public Review Response to Comments