Date: 2011-09-06 05:59:28
URL: http://bit.ly/o74Fsk
Water recycling : A primer on gray water systems MiamiHerald.com Residential gray water is all the wastewater from showers, bathtubs, bathroom sinks and clothes washers. It adds up to nearly 50 percent of the average households water use. And while black water - wastewater from toilets and the ... and more »
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