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We had the privilege of attending a very hands on greywater workshop courtesy of The Greywater Guerillas, a local Bay Area crew of experts who are passionate about teaching folks to use their water (twice) wisely. Greywater is water that has been used once in your home and only contains a little soap, dirt (from laundry or skin) or kitchen particles like food or grease. Unlike blackwater, which is water that has touched excrement, like toilet water, greywater is safe to use in watering your garden. As Laura Allen, co-editor of the book Dam Nation: Dispatches from the Water Underground, and our amazing instructor points out in this video:

You don’t want to put the greywater onto the part of the plant that you’re going to eat…if you get the water going into the ground, there are no more health risks than would be [associated with the regular dirt in your garden]. So you want to get the greywater into the ground soaking down to irrigate the roots of your plants.

We were able to do just this in home owner Tara’s backyard. We replaced her kitchen sink pipe with a 3 way valve giving her the choice to send her sink water back to the sewer or out to the greywater system of pipes and mulch basins surrounding four fruit trees. The system was relatively simple and inexpensive. Total price was $200 for all new pipes which included a $60 top of the line 3 way valve, a bunch of 2 way splitters and under a hundred feet of piping. If you live close to a salvage yard or are savvy on Freecycle or Craigslist you can get these materials for way cheaper or even free.

Laura touches on some of the legality of systems like this:

California has a greywater code so greywater theoretically is legal…some states have no code so greywater is not legal. In California, you have the potential to do greywater…that said, the code that’s written down for greywater is very, very wasteful, it’s very bad, most people don’t follow it. In California most people have unpermitted systems which are…technically illegal, just as building anything unpermitted is technically illegal.

There are a few states, like Arizona, that encourage safe and resourceful greywater systems like the one we built here. So find out what your state allows before cutting into your pipes. But if you’re like these Californians and your state codes are no good, you’ll want to find some greywater experts to consult and keep in touch with to help change the codes for better.

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Related Posts:

• Apartment Composting 101: Vermicompost with Barb Finnin
• Real Goods: We Took a Workshop at The Solar Living Institute
• Oakland Food Connection: Educational Rooftop Gardening
• No Knead Bread: Food of the Gods
• Big Announcement! We're Moving to the Mountains...Literally

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It’s really exciting to see other videobloggers exploring sustainable, green practices and documenting it! Rhett and Amy from Greentime show us how to simply recycle some of the water we tend to waste. I’m totally getting a bucket for the bath tub now! [Original Link]

Related Posts:

• Composting 101 with Ryanne's Mom
• Kevin Bayuk: Urban Permaculture
• Eliminating Waste, One Pancake At A Time
• Cheap and Green Insulation: Recycled Paper Cellulose
• Rethinking Water: Greywater Guerillas Workshop

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The Green City Gallery is an eco-demonstration site/art gallery/community meeting and event space in downtown Berkeley, CA. A collaboration between Bay Localize, an Oakland based non-profit focused on post petroleum community empowerment, and Dig Cooperative, an eco-design crew helping to re-invent urban environments to be more sustainable. The Green City Gallery was established to showcase to the public, as well as local politicians and business folk, that green does not have to be hippy-fringe but practical, clean and smart. Some of our favorite demonstrations are the roof top garden (keeps buildings naturally insulated, provides green space and food to occupants), the constructed wetland/greywater filtration (filters all your household water naturally through gravel and plants right back out to your garden) and last but not least, the composting toilet and urinal (fertilize your plants every time you go!). Thanks to Ingrid from Bay Localize for touring us around! If you’re in Berkeley, head over to the space, it’s at 1950 Shattuck Avenue, Downtown Berkeley.

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Related Posts:

• Behind The Scenes: SustainableRoute.com
• Glenn McAnanama: UpperGreenSide.org
• Green Guerillas Give PG&E A Run For Their Money
• Oakland Food Connection: Educational Rooftop Gardening
• Big Announcement! We're Moving to the Mountains...Literally