Solar pump purifies water

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Stephen Salter provides designs for a still and pump that works the way a tree transpires. Like a tree, it uses solar power to wick water up from underground, then captures the evaporated water. This water is purified–basically distilled–so can be used where water is contaminated or in marshy areas. The basic design is provided on the website, with ideas for improvements, limitations, alternative designs, etc. There is no patent, and potential users from Canada, Iran, China, Singapore, the USA (Texas, Florida, California, Nevada, Massachusetts, Washington), Gaza Strip, India, and Pakistan, are interested in making their own models. See also the illustrations of different models in the gallery.

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