Recycle gray water for landscape irrigation

Some waste water can be reused.
An enormous amount of relatively clean water goes into sewers and septic systems when it could be used a second time for landscape irrigation. Drain water from showers, sinks and washing machines, called gray water, can be plumbed separately from toilets. Some states, including California, have specific regulations governing this use, while in others special permission may be needed. Some places allow only subsurface irrigation with graywaterWastewater from a building that does not include flush-water from toilets and (as most commonly defined) water from kitchen sinks or dishwashers. In some places, graywater can be collected and used for subsurface irrigation. .

Green Points

LEED for HomesLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. : 1 point for a gray water reuse system (WE 1).

NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. /ICC-700: 4 points when each toilet is flushed by reclaimed or recycled water; 10 points for irrigating with reclaimed or recycled water (802.1).

Learn more in the Green Building Encyclopedia

Gray Water

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