BioSand Water Filters
are an adaptation of slow-sand filtration, designed
for use at the household level. The filter removes water-borne
bacteria, viruses, protozoa, and other organisms that
cause diseases such as cholera, typhoid fever, and amoebic
dysentery. The filter also strains out the particles
and organic matter that cause cloudiness, unpleasant
taste, colour, and odour.