lucy24 - 4:25 am on Oct 9, 2012 (gmt 0)
Oh, wait, wait, I know this one. The town builds a new water-treatment plant that will serve not only residential customers but a nearby factory that uses huge amounts of water at a nice constant rate, day in and day out, just what you like to see. Prices down, efficiency up.
Until the factory shuts down, the treatment plant has to downshift to a much less efficient level, and everyone's water bill goes sky high.
Happened before I moved here, but they're stuck with it until the treatment plant dies of old age.