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/8/b1/8b1c25c3-b80c-566c-a237-74f65fef9249/5609f6c07edac.image.jpg?resize=300%2C194)
In this Wednesday, July 29, 2015 photo, a Des Moines Water Works employee works to fix a water main break on a street in Des Moines, Iowa. The Des Moines water utility is confronting an array …