For most of us, finding a bathroom or toilet isn’t hard. Chances are it’s not more than a short walk away – you may even be there now. For 2.5 billion people around the world, however, it isn’t that easy. Their bathroom is likely shared, has no running water and is a walk from their house. And you thought port-a-potties were bad. The lack of access to sanitation is a huge challenge to the 1 billion people living in urban slums in Africa, Asia and Latin America. The dangers of inadequate sanitation infrastructure are well known – contaminated drinking water and disease transmission become difficult to avoid.