That is a commonly asked question.  Gavin Vassali, a seventh grade student from the Mississippi Gulf Coast, set out to answer that question with his science fair project.  His findings are very interesting.  We commend Gavin for bringing recognition to the hard working professionals in the water industry, and for showing the public just how safe and clean drinking water in Mississippi can be.  See the newspaper article at http://www.sunherald.com/news/local/education/article145475174.html