How safe is water to drink from angeles forest? Also I’m curious if foraging is safe since I read chemical herbicides are in use along the tujunga creek. Would love to study the relationship between our ecosystem if anyone else is interested.

I would not advise you on it. Treat the water like third world country. Boil it. just play it safe. if you know your plants and roots, and what they can do. Then, on the side of caution you may want to or not

Giardia is a microscopic parasite that causes the diarrheal illness known as giardiasis. Giardia (also known as Giardia intestinalis, Giardia lamblia, or Giardia duodenalis) is found on surfaces or in soil, food, or water that has been contaminated with feces (poop) from infected humans or animals.