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Concrete Biosand Filter

91 bytes removed, 00:55, 8 November 2012
Manuals, videos, and links
* VIDEO: [http://www.youtube.com/watch?v=f5htXA1OVio&feature=related BioSand water purification filter in Lusaka, Zambia]
* Organisation: [http://www.cawst.org CAWST - Centre for Affordable Water and Sanitation Technology]
* [http://wellspringwatersystems.com/solutions/waterbox-100 '''Ultrafiltration Systems''']
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