NY Times: Old Water Pipes Becoming Hard to Ignore

From NY Times: 

Water officials say they believe that a handful of wooden water mains are still in use in South Dakota, Alaska and Pennsylvania, among other places. The old wood pipes offer a vivid reminder of the age and fragility of the nation’s drinking water systems, many of which rely heavily on old pipes that often remain out of sight and mind — until they burst.  And they are bursting with alarming frequency in many areas these days, particularly in systems coping with septuagenarian, octogenarian, and even century-old pipes. There are an estimated 240,000 water main breaks each year in the United States, according to the Environmental Protection Agency’s Aging Water Infrastructure Research Program, and some water experts fear that the problem is getting worse.