Impressive write-up by Jbarca. Almost makes one want to never drink any kind of water again unless it's been boiled.
We're not into dry camping and have only ever used our fresh water tank once when we had to stay in an overflow site. But it makes me wonder, what happens to water in your piping system when you use city water all the time but you may leave your RV sitting for long periods between use? Is simply flushing the lines for a few seconds sufficient?
Another question I have wondered about is what do private campgrounds do for sanitizing water if they have their own well? Are there federal or state regulations that specify treatment for them and does it have to be regularly tested?