We have previously used our Water-to-Go Filter water bottles whilst camping in Botswana and most recently in Indonesia where we witnessed a total solar eclipse from an uninhabited island in the Watubela range, near Papua. See pictures. In both places we have filled our bottles with confidence from tap water of unknown quality and drank freely without ill-effect. As you can see from the pictures, the weather let us down a bit for eclipse viewing but the Water-to-Go bottles did not let us down. Thankfully the clouds relented enough to give us a reasonable view.
Tony & Gill Teperek