The City of Los Angeles is having a rash of water main breaks. One of the worst was a pipe almost 100 years old.
I heard an interesting possible explanation for the breaks. In an attempt to save water, Los Angeles only allows lawn watering on Tuesdays and Thursdays. The theory is that because all the demand is at the same times, there is extra pressure on the system which has put extra stresses on the pipes. Extra stress equals extra breaks.
If this explanation is turn, in the attempt to save water, lots of water has been lost, along with a lot of property damage.