The EPA estimates that $8 billion is needed in Massachusetts over the next 20 years to rehabilitate our aging drinking water infrastructure: $6.6 billion to replace aging water mains, $877 million for treatment plants, $622 million for water storage facilities, and $318.2 million to develop new sources for public drinking water supplies.

In this report (pdf), Clean Water Fund reviewed the Annual Statistical Reports filed by municipal water districts in 2006; even with 56 of 266 Community Water Systems' data unavailable, the figures show that in 2006 there were at least 1,970 leaks found which lost hundreds of millions of gallons of potable water from leaks in water mains.