Rainwater Harvesting for Drylands and Beyond by Brad Lancaster

Greywater Harvesting

Rain- and greywater-harvesting garden on periphery of small yard in Tucson, AZ. Roof runoff is directed to basins via a downspout, then pipe (beneath the path—see dotted blue flow arrow). Kitchen-sink dark greywater is directed to basins via a branched-drain pipe system (purple dotted pipe). Washing-machine greywater is directed to basins via a multi-drain system (purple dotted pipe). With each load of laundry the washing machine’s drain hose is rotated from one greywater drain to the other (each discharging greywater to a different section of a mulched basin and its plantings). Greywater is discharged to multiple points, rather than one, to ensure soil stays aerobic and odor-free. All systems use gravity to distribute the water for free. Thus all pipes maintain a minimum 2% slope (1/4-inch drop per horizontal foot, or 2-cm drop per horizontal meter).


HarvestingRainwater.com Greywater Image Gallery

HarvestingRainwater.com Greywater Videos

In addition to the links below, we also have a list of Greywater Resources such as publications, online resources, compatible soaps, and system components.

Drops in a Bucket Blog

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Upcoming Events

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Umbrella Newsletter

The Umbrella: Spring Equinox 2017

THE UMBRELLA:
A catch-all of resources,
events, media, and more
from Brad Lancaster
Spring Equinox 2017
Around here we like to rhyme with the seasons whenever possible. In this case, that means welcoming the fast-approaching beginning of SPRING (the Vernal Equinox (in the northern hemisphere) is March 20 this year in Tucson, and marks one of only two […]

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