Here's an interview of a resident of Tacachia, Bolivia about their bio-sand filter. Previously, EWB-Missouri University of Science and Technology had constructed filters to clean the community's drinking water. This footage was recorded in Dec 2010 by Engineering in Action (www.engineersinaction.org) For more information, contact Ruben Mamani (ruben775@yahoo.com) or Jacob Anderson (jacob.anderson10@gmail.com
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