As of 2011, sanitation coverage worldwide was at 64%.  With a worldwide population of just over seven billion this means that two and a half billion people still do not have access to improved sanitation facilities.  Of these people, just over one billion still practice open defecation.  Lack of proper sanitation and hygiene often leads to poor health and polluted water, which in turn leads to less production, less time in school, and many deaths worldwide. One methodology that iscontinue reading