A brief note on bio-sand water filters - An adaptation of the traditional slow sand filter
Biosand filter (BSF) is an adaptation of the traditional slow sand filter, which has been used for community drinking water treatment for 200 years.
Posted on 17 Jan, 2013 11:20 PM

Pragathi was founded in 1987, it is a non-government, non-profit and non-religious organization that works for the welfare and development of the tribal and marginalized sections of society, particularly targeting women and children. Pragathi is working in Mysore and Chamarajngar District, covering more than 100 tribal villages with approximately 9600 families.