According to the EPA, about 30 percent of the pipes the United States water infrastructure are between 40 to 80 years old. The aging water system is dangerous to public health and often causes property loss and inconvenience. The University's pipe survey, which looked at the pipe system on campus property to find leaks, will help to combat this national problem at the university level.

http://www.cnn.com/2011/US/01/20/water.main.infrastructure/index.html