watch 01:50 The Loop (Games) Do you like this video? The Poisoned Water Supply is a sublevel on the second floor of the Cathedral. It is only accesible when the quest with the same name is available. This article is a stub. You can help the Diablo Wiki to become more awesome by expanding it. Retrieved from "https://diablo.fandom.com/wiki/Poisoned_Water_Supply?oldid=35974" Categories: Article stubs Community content is available under CC-BY-SA unless otherwise noted.