This Friday, March 20, is the Vernal equinox--the first day of spring (even though it's supposed to snow)! Here at PWD, we're taking one big collective sigh of relief, hoping that the harsh cold of winter is behind us. With warmer temperatures, the
natural forces that put so much strain on our hundreds of miles of cast iron
water mains will begin to relent and we should experience less water main breaks.
Recently, Philadelphia Magazine published Philadelphia: We’re Not Alone in Water Main Breaks, which explores winter's effects on water mains and makes clear that Philadelphia is not unique when comes to this problem. In fact, it points out that Philadelphia grades better than the national average.
The piece notes, when compared with other cities and the national averages for water main breaks per year, we're actually doing pretty well. Our average 240 breaks per 1000 miles of pipe per year beats the national average of 270 per 1000 miles. And our water system's life-cycle average (which is the average number of years it would take at our current rate of replacement to replace the entire system) is 125 years, which sounds like a long time until you compare it to the national average of 200 years. Starting in 2016, PWD will replace old pipes at an even faster rate to get that life-cycle average down to 100 years. A baby born in 2016 could live long enough to see every mile of pipe replaced in his or her lifetime! So that's something.
As we replace the cast-iron pipe we're using newer ductile iron pipe. (Remember "ductile" from physical science class? Think flexible... not brittle.) This will help to cut down even further on the number of breaks per year. While we may never be able to completely avoid water main breaks, our hope is that we can reduce the number and continue to improve our response and resolution time so that when the inevitable break does happen, it causes as little disruption as possible.
In the meantime, we appreciate our customers and the people of Philadelphia helping us out by keeping an eye on the streets. And we appreciate our crews that work around the clock to fix water main breaks in less than desirable conditions. If you see a water main break or suspect one because you see water where you don't think water should be, please call our 24-hour hotline at 215-685-6300.