No shit. This of course is true. In northern Calif the pot growers are using chems on the plants that are banned, totally against the law, along with the other growth agents, and it runs off into the little streams and groundwater and kills wildlife that drink that water. Tragic and disgusting lack of responsibility going on. This pollution was just beginning to worsen when I was there years ago and now it is just gross. If you smoke it or use the processed products, what poisons are you ingesting. Organically grown weed is the best solution.