FRAGMENTED WATER SYSTEMS. “There are approximately 161,000 public water systems in the U.S., including about 53,000 community water systems, the remainder are non community systems. Of those, an alarmingly high number have been found violating maximum contaminant levels or treatment standards.”
http://www.watertechonline.com/articles/166470-infusing-technology-into-the-drinking-water-industrys-future