| http://www.w3.org/ns/prov#value | - lint, hair, bits of sand and dirt and other small debris, all of which can block drippers or porous hoses, so it is usefulhttp://www.awareenvironmental.com.au/images/docs/PAAWAREGreywaterGuide.pdfInstalling and Using Greywater - Ecology CenterBook 6.29 MB | Ebook Pages: 128 Greywater is untreated waste water which has not come into contact with toilet waste.
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