And in the next 10 years, he plans to make clean water accessible to a hundred million more.

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"Using these plants, we will be able to remove radioactive nuclides from the water and make it clean for irrigation purposes or even as a source of drinking water, " says Slavik Dushenkov of Phytotech.

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The idea is that water and energy are inextricably linked: it takes water to make energy and energy to clean and move water.

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But securing permits for this kind of system, installing monitoring equipment to make sure the water is always perfectly clean, and getting over public squeamishness isn't worth it.

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We already have the scientific knowledge to make immediate strides in the provision of clean water and sanitation, provided the funding is there.

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Few of us are fortunate enough to enjoy clean municipal tap water -- the rest have to make do with clunky bacteria-riddled filters and wasteful bottled H2O.

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Others make sure our roads and rails are designed and built safely and that our food and water supply is clean.

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It needs to be clinically clean, have sealed concrete floors with several large drains (it takes 8 gallons of water to make 1 gallon of beer), a spacious refrigerated room and copious utility connections.

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