http://articles.mercola.com/sites/articles/archive/2015/06/16/ceramic-water-filter.aspx?e_cid=20150616Z1_DNL_art_2&utm_source=dnl&utm_medium=email&utm_content=art2&utm_campaign=20150616Z1&et_cid=DM77308&et_rid=994849122
Ceramic Water Filtration Provides an Inexpensive Solution to Clean Water in Rural Mexico