Rainwater HOG is a modular water 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  and won a Spark Design Award  and two additional sustainable product awards, a California Home & Design award  and a Green Log Award  in 2009.
Rainwater HOG modules were used by David Gottfried, founder of the US Green Building Council, to achieve the USA's first LEED Platinum Home Remodel . 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.
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.
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