Graywater

What is a graywater system?
Graywater systems are onsite wastewater systems that use graywater for subsurface landscape irrigation through the use of mulch basins, disposal trenches or subsurface drip irrigation fields.

What is graywater?
Graywater is untreated wastewater that has not been contaminated by toilet discharges. Discarded water from bathroom sinks, showers, clothes washing machines, laundry basins are sources of graywater. Graywater does not include kitchen sinks or dishwashers. Graywater is not "recycled water."

Helpful Resources


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Rebate Available


Sweetwater Authority offers up to a $75 rebate (PDF) toward purchase and installation of a single-source graywater system. Review the rebate approval check list (PDF).