From an email:
“In the video, Hawkins says that the 750 miles of pipe in the District have a median age of 96 years, and that some sewer lines were put in during the Civil War. He also points out that these pipes face a 200-year replacement cycle â the older these pipes get, the more problems they cause. A sinkhole that appeared Tuesday on G street is evidence of this aging infrastructure below the pavement.
The video of Hawkins comes from a panel event hosted by the Value of Water Coalition last month as part of Infrastructure Week 2014 (the moderator is Cathleen Kelly from the Center for American Progress).
The panel sought to point out that the challenges DC faces are not unique to this city, but are present across the nation: in the U.S., a water main breaks every two minutes, and we lose 1.7 trillion gallons of treated drinking water every year.”