Gardeners go gray to save water

  • Elaine Newman stands next to a pipe that connects from her washing machine to a mulch basin in her backyard as part of a laundry to landscape greywater system in Petaluma, on Thursday, March 6, 2014. (BETH SCHLANKER/ The Press Democrat)

Interior designers this season are loving gray, a hue topping many a trend chart. But homeowners concerned about conserving water also are going gray.

Only a few years ago, "graywater" systems were part of the eco-underground, bootlegged by do-it-yourselfers determined to bypass onerous government regulations that made getting a legal permit to use recycled water almost impossible.

But that all has changed. The practice of diverting water from washing machines, showers and bathroom sinks to irrigate plants is coming clean.

Changes in the state plumbing code, most significantly a relaxing of regulations that lets homeowners install their own laundry-to-landscape systems without a permit in most jurisdictions, have made it easier to save water that otherwise goes down the drain.

"There's a huge amount of awareness now and a lot of people installing systems," said Trathen Heckman, executive director of Daily Acts, a Petaluma-based nonprofit that promotes green living practices and has facilitated at least 50 new systems.

"Given the drought reality we're in, we need to make sure we're using water wisely by using less and recycling as much as we can."

It's not just "greenies" tapping graywater. Cities like Cotati, Windsor, Petaluma and Santa Rosa, as well as the Sonoma County Water Agency and the county of Sonoma, all tout graywater. Santa Rosa offers rebates for qualifying systems.

Some municipalities, often partnering with Daily Acts, hold workshops for homeowners to learn how to install their own laundry-to-landscape system. Each participant gets a free kit with virtually everything needed to do it themselves. Experts provide support, even coming out to people's homes to troubleshoot.

Graywater systems are like tapping into a well without drilling. They divert untreated wastewater from bathtubs, showers, bathroom sinks and washers into pipes that carry it out into the landscape. It can be a safe and water-savvy way to irrigate fruit trees, shrubs and ornamentals, but is not recommended for root crops or edibles that touch the ground.

Graywater users need to use detergents made safe for graywater use, brands like Oasis, ECOS and Dr. Bronner's. It must be not only biodegradable but "biocompatible," without the salts that can build up in your soil. Such soaps also are available for the bathroom.

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