The follow links information from the Department of Environmental Quality regarding hazardous materials, water quality and other ways to help protect our waterways and environment.
1. DEQ has podcasts, with some focused-on water - https://www.oregon.gov/DEQ/Pages/index.aspx/
2. Waste and pesticide reduction: https://www.oregon.gov/deq/recycling/Pages/default.aspx https://www.oregon.gov/deq/Residential/Pages/default.aspx
3. Water quality monitoring - DEQ integrated report has a web map to look up a waterway of interest
https://geo.maps.arcgis.com/apps/instant/sidebar/index.html?appid=7d13b19e01a44f1dbfd12903576e6d29
4. Toxics story map - https://willametterivertoxicsreductionpartnership.org/
5. Fact sheets and maps Department of Environmental Quality : TMDL Program: Willamette Basin : Total Maximum Daily Loads : State of Oregon for temperature, mercury, bacteria. https://www.oregon.gov/deq/wq/tmdls/Pages/TMDLs-Willamette-Basin.aspx
6. DEQ TMDLs include a reference to EPA Stormwater resources: https://www.epa.gov/npdes/npdes-stormwater-program