Mushrooms Used to Clean E. Coli from Rivers and Immediately Implemented in England
www.goodnewsnetwork.org
The mushrooms in question were the very delicious and very helpful turkey tail, and the pollution in question was sewage

“The application was ever so simple: a bag of woodchips impregnated with turkey tail spores left at the bottom of the river. The mycelia, or filament system of the mushroom, filtered out 80% of the E. coli, 83% of the phosphorous, and 35% of the nitrogen.”