With California now facing its third straight year of drought, pretty much any conservation idea out there—no matter how icky it may sound at first glance—gets a hearing. For instance, as Melinda Burns reports for Miller-McCune today, the state has finally decided to legalize "gray-water" systems, which divert wastewater from dishwashers, laundry machines, sinks, and showers (but obviously not toilets) to irrigate lawns and shrubbery.