Water Quality Assessment 303(d) List (current)

Washington State's Current (2022) Water Quality Assessment (WQA) is produced in the Environmental Protection Agency's "Integrated Report" format. The WQA consists of both the 303(d) List and the 305(b) Report. The 303(d) List is comprised of only Category 5 listings. The 305(b) Report lists all waters and all categories. The 2022 WQA contains both freshwater and marine listings. EPA approved the 2022 WQA as fulfilling our 2020 and 2022 WQA submittal requirements on May 11, 2026. The WQA is presented on the 1:24k National Hydrography Dataset (NHD).华盛顿州2022年版现行水质评估（Water Quality Assessment, WQA）采用美国环境保护署（Environmental Protection Agency, EPA）制定的《综合报告》（Integrated Report）标准格式编制。该评估包含303(d)清单与305(b)报告两大组成部分：其中303(d)清单仅收录5类名录，305(b)报告则涵盖全部水体及所有类别名录。2022年版水质评估同时收录了淡水与海水水体的名录信息。美国环境保护署于2026年5月11日核准该2022年版水质评估，认定其满足2020年与2022年版水质评估的报送要求。本水质评估基于1:24000比例尺的国家水文数据集（National Hydrography Dataset, NHD）进行编制与呈现。