Would the water provided by public utilities the United States be considered usurped from native tribes and not okay to make wudu with? I’ve been wondering about this for a while, since the land was stolen from Native Americans. Or is it different because water falls from the heavens?

The water comes from lakes or rainwater, so the water itself is lawful. As for the land, while it was originally usurped from native Americans, not all the lands belonged to them. Islamically, if one develops a land or fences then he owns it. But large swaths of land were not owned by them, so they had not developed them or fenced them.