TY - Generic T1 - Water Quality Index Y1 - 2022 A1 - Oregon. Dept. of Environmental Quality, KW - bacteria KW - dissolved oxygen KW - nitrogen KW - pH KW - phosphorus KW - pollution KW - solids KW - water quality KW - water temperature CY - Hillsboro, Or. UR - https://www.oregon.gov/deq/wq/Pages/WQI.aspx N1 - Trends in water quality. This website includes an interactive map and subbasin reports giving trends in recent years. ER -