What is gray water and can it solve the global water crisis?
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As the world confronts a water crisis, more people are recycling gray water at home. Left over from bathing or washing clothes, gray water can be used to water your garden.
What is Gray Water? • Friends of the Earth • Cruise Ships
Drinking Water Quality: Problems and Solutions: Gray, N. F.: 0884259912259: : Books
What is gray water, and can it solve the global water crisis?
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