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Gray water and Rainwater Harvesting for Residents

Gray water is used, untreated water that comes from bathroom sinks, showers, dishwashers and washing machines. Residential Graywater and Rainwater Harvesting, PhotoResidential graywater systems collect and store gray water for landscape irrigation. Gray water does not come from the toilet or kitchen sinks, and is safe to irrigate landscaping with.


Arizona Department of Environmental Quality’sOffSite Icon brochure Using Gray Water at Home Acrobat Icon PDFs (2 MB) provides general information about gray water use in Arizona.


Rainwater harvesting is collecting rainwater for future uses. There are many types of rainwater harvesting systems that stem from simple landscaping adjustments to large cisterns buried in the earth.

Residential Graywater and Rainwater Harvesting, Photo

Harvesting Rainwater for Landscape Use Acrobat Icon PDFs (5 MB) provides information about planning and installing residential water harvesting systems. It includes information on calculating plant water use requirements and historic rainfall for many Arizona cities and towns.

Developed by the University of Arizona Pima County Cooperative Extension and the ADWR Tucson AMA, 2004, 2006.


Conservation Section Navigation Links

Use the above links to navigate the Conservation Section