When water mains break. The “Super Bowl” effect?

9/19/2009 UPDATE After weeks of leaks in LA’s water mains, there are too many to count off one by one. Instead, the Los Angeles Times now has a map of breaks. Click here to see if you can expect treated potable water to burst through a street sinkhole near you. Elsewhere in the Times reporter Jessica Garrison finds experts who wonder if the problem isn’t pressure changes resulting from two-day-week water rationing?

I hate to say that I wondered it first, because Garrison, her quotable experts, and others at the Times no doubt wondered it early on too. The idea is as old the joke about what happens to city plumbing during Super Bowl commercials.

When questioned by myself and others from the June outset of the two-day-week lawn watering ordinance about the effect of changing pressure on city pipes, the Department of Water and Power insisted that its