We chose a micro-filtration technology with a membrane (hollow fibre) that eliminates up to 99.9999% of bacteria (eg : Escherichia coli, Vibrio cholerae, etc.) as well as 99.9% of protozoan parasite cysts (eg: Cryptosporidium parvum, Giardia lamblia), organisms which cause illnesses passed on through water. This greatly reduces the risk of contracting diseases such as diarrhoea, dysentery or giardiasis.