According to a special report:

Even with the advancement in technology, each day leaking pipes account for an estimated 7 billion gallons of water lost in the country, according to the American Society of Civil Engineers. To get an idea of how old the nation’s water pipes are, 30 percent of pipes in systems that deliver water to more than 100,000 people are between 40 and 80 years old, according to the Environmental Protection Agency (EPA). About 10 percent of pipes in those systems are older.

A report by the American Society of Civil Engineers gave the nation’s drinking water systems a grade of D- in 2009 after concluding that the systems “face staggering public investment needs over the next 20 years.” The same group awarded a C to New Jersey in 2007 for its drinking water infrastructure.

“You don’t hear a lot of people talking about water mains, largely because they are underground,” said Eschbach. “Unless of course if one breaks.”