Waste water from showers, baths and wash-hand basins is called grey-water. With relative ease grey-water can be treated up to 2nd class quality, suitable for
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File:Greywater Recycling Heat Recovery System 1.jpg - Wikipedia
File:Greywater Recycling Heat Recovery System 2.jpg - Wikipedia
How does greywater recycling affect the overall water consumption of a household? –
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