On October 14, 2008, Mayor and Council unanimously voted to require all new residences to be built with gray water capabilities. Starting June 1, 2010, all new single family homes and duplexes must include, on the plans, plumbing for future gray water distribution. These new rules are part of Tucson’s effort to promote water conservation and efficient use of water resources by the City and its residents. Gray water is water previously used by the interior of the house, from clothes washers, bathtubs, showers, or bathroom sinks and reused for outdoor irrigation. Using this recycled water can save a typical household 13,000 gallons of potable water a year
Keywords: grey water, gray water, harvesting, ordinance, regulation, safety, design, maintenance