At the California Water Resources Board’s recycled water unit, chief Randy Barnard is fielding many calls from homeowners desperate to save their beloved lawns and gardens. “If they’ve got a prize fruit tree they’ve been babying for years, they don’t want to lose that tree,” he said.
But for many, he has some bad news to share. Recycling water at home is not as easy as just hooking your shower up to the lawn sprinklers, and recycled water probably won’t save the lawn…
In California, homeowners are now allowed to irrigate with untreated water straight from bathroom sinks, washing machines and bathtubs, as long as — among other requirements — the water lines run beneath soil or mulch, so as not to come in contact with people. That rules out using untreated gray water on lawns, which typically need above-ground spray heads or sprinklers.
Gray water can even go to vegetable gardens like Negrin’s and Friedman’s, as long as it doesn’t touch root vegetables or any other plant part that’s eaten. Tomatoes are fine, but forget about carrots.
The latest plumbing-code changes have enabled families to install these straightforward laundry-to-landscape systems without a permit, sending wash water into the yard with a valve to divert it back into the sewage system when needed. A handy homeowner can do it with no more than a couple hundred of dollars of piping and parts.
Necessity – a drought though perhaps the state’s required water consumption cuts provide the motivation now – leading to innovation. Three additional thoughts:
2. Doesn’t this pose something interesting safety issues? What if the homeowners do this wrong and contaminate certain things they grow. Who regulates all of this? I can imagine someone complaining about the children who could be affected by this.
3. If this is relatively easy to do, why isn’t this a common feature of homes already? Even if your location isn’t experiencing a major drought, this seems like basic conservation.