Rainwater Hog

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Rainwater HOG is a modular rainwater storage tank which can be used horizontally or vertically for rainwater harvesting, emergency water storage, and post-filter greywater storage. Rainwater HOG was named a USA Top-10 Green Building Product in 2008[1] and won a Spark Design Award[2] and two additional sustainable product awards, a California Home & Design award[3] and a Green Log Award[4] in 2009.

The Rainwater HOG was designed by award-winning architectural innovator Sally Dominguez for use in tight spaces and is sized to allow designers and engineers to use the stored water as effective thermal mass inside a structure.


Rainwater HOG modules were used by David Gottfried, founder of the U.S. Green Building Council, to achieve the USA's first LEED Platinum Home Remodel.[5] Gottfried used HOGs to store rainwater for flushing ultra-low-flush toilets, and additional HOGs to store filtered Greywater for use on the non-edible portion of the landscape.


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