From the Daily News:
New York's 7,000 miles of water mains, tunnels and aqueducts - some dating back to the 1870s - deliver 1 billion gallons of drinking water every day.
They also break down a lot. There were 444 water main breaks in the last fiscal year and 360 breaks the year before.
"The good news is it's a very redundant system so even when there's a break of this size, you can keep supplying water to customers," Department of Environmental Protection spokesman Farrell Sklerov said.
The city spends millions of dollars a year maintaining the underground system.
Why the massive building when the infrastructure is so fragile? Shouldn't we invest in upgrades first?