Beware the Law of Unintended Consequences…

Lawn-Watering Rules Tough On Los Angeles Water Mains

The Los Angeles Times (4/14, Zahniser, Garrison) reports, “A blue-ribbon panel of scientists said Tuesday that the high-volume water main breaks that bedeviled Los Angeles last summer and fall were caused in part by the city’s restrictions on lawn watering, and their findings could force the city to remake its strict water conservation policy.” The city’s “restrictions have proved highly successful,” dropping the city’s water use to a 31-year low, but the “policy was too much for the city’s aging network of cast-iron pipes, causing fluctuations in water pressure that strained them to the bursting point, the panel’s long-awaited report found.” The report’s “conclusions appear to put to rest other theories about the cause of the mystery, including increased seismic activity.”

Reposted from ASEE First Bell, April 14, 2010.

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