You abandoned single-use plastic water bottles long ago (obviously), but you've probably never seen a reusable bottle like this. The US-made Hydros Bottle includes a filter to get rid of nasties in sketchy water. "The Hydros Bottle is a filtering water bottle that turns questionable water – from public water fountains, bathroom taps, and kitchen skins – into crisp, clean water. Our Hydros filter can take out chlorine, chloramines, and particulates from tap water."
The Hydros Bottle, which began as a business plan for the Dell Social Innovation Competition, helps fund water projects in Africa. For every bottle sold, one dollar is donated to clean water development via a partnership with Engineers Without Borders.