Tuesday, February 26, 2008

Public needs to overcome its resistance to toilet-to-tap

The water crisis is becoming quite real in some parts of the States.

Taking the salt out of ocean water sounds like a good idea, but it's economically and environmentally far more expensive than sewage-water recycling. Orange County water officials estimate desalinated water costs between $800 and $2,000 per acre-foot to produce, while its recycled water runs about $525 per acre-foot. Desalination also uses more energy (and thus produces more greenhouse gas emissions), kills tiny marine organisms that get sucked up into the processing plant, and produces a brine byproduct laced with chemicals that goes back into the ocean.

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