Yosemite Valley Backpackers Camp sewer & water.

[Wandering Daisy]

I camped there earlier this year and simply took water out of the creek. I treated some for drinking and for cooking, it gets boiled. I would suspect that their reasoning is that this is a backpackers camp, and backpackers have everything they need to deal with non-potable water. In the past there has been some abuse of the backpacker's campgrounds- used by people who were not backpacking. The "inconvience" may keep out those who are not truely backpacking. Honestly, I did not find not having potable water a real problem. You could also just fill up a 2.5 liter platypus in the other campground when you unload your other stuff.