Southern California Public Power Authority (SCPPA), a public authority that includes 10 municipal utilities and one irrigation district in southern California, purchased an option to buy two large solar updraft towers being developed in the county of La Paz, Arizona.

FORBES: U.S. Utility Buys Option on Arizona's Mega Solar Tower

While municipal water utilities are required to provide public reports of test results, bottled-water makers are not. (On the other hand, well water, which is found in many rural areas, isn't regulated as water provided by towns and cities is.) So although you may fork over a pretty penny for bottled water, that doesn't mean it's any better than what's coming out of your faucet.

CNN: Is your bottled water safe?