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/7/b7/7b719669-b7e9-5bec-87a4-0fdfbfd98780/5609f6bf5ed67.image.jpg?resize=300%2C200)
In this Wednesday, July 29, 2015 photo, Des Moines Water Works employees walk past water bubbling through a hole in a street following a water main break in Des Moines, Iowa. After decades of …