Drinking water systems imperiled by failing infrastructure
![Drinking water systems imperiled by failing infrastructure](http://bloximages.chicago2.vip.townnews.com/democratherald.com/content/tncms/assets/v3/editorial/1/c7/1c780829-b951-5c76-95a8-f2917ffc9b99/5609f6c09f66e.image.jpg?resize=300%2C451)
This Wednesday, July 15, 2015 photo shows an old drinking fountain at the Des Moines Water Works plant in Des Moines, Iowa. "We're reaching the end of the life cycle of some of the most critic…