Create a simple gray-water system for household sinks
An incredible amount of reusable water is wasted every day in the average household. A simple gray-water system for the kitchen sink would be ideal for the average family to use. A simple button or valve could switch the water from going into the sewer to an on-site collection tank instead. The gray-water could then be used to water the lawn, plants, garden, etc. instead of using freshwater from the hose or faucet.
You have to have a reclaim water permit in Arizona and most western states in order to reclaim water on your own property.
Since the desert has limited water & we get most of our usable water through city reclamation centers & aquifers, unused water cycle needs to be maintained.
Ironically, there are better federal & state tax incentives for water/household reclaim projects than solar power.
http://www.azdor.gov/TaxCredits/WaterConservationSystems.aspx
http://www.azwater.gov/AzDWR/waterManagement/documents/ReclaimedWaterand...
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