"Did you boil it? Like, with fire?" Tieh asked, with no hint of mockery in her voice or face. "That usually makes it okay to drink. But we shouldn't be looking for civilization. We were trying to set up a colony, right? So we should have the supplies to set up a decent camp, at least. Once we locate the Necessities of Life and aren't in immediate danger of starving to death, we can worry about finding our neighbors. That said, it's still a good idea to stick near the river; animals of all kinds tend to set up around water sources, when they can." She smiled, broadly.