This is a discussion group for the Biosand filter technology.Discussion and sharing of lessons learnt, best practices and experience in implementing Biosand filter projects.This group is maintained by CAWST (Centre for Affordable Water and Sanitation Technology) to provide updates, generate feedback and discussion on the implementation of Biosand Filters. For more information visit CAWST's Biosand Filter Knowledge, CAWST's website, and learn about our training and services as well as education and training material for download.