For those of you with technical minds. There is a graphene-oxide membrane system in the works to desalinate water. This opens the possibility of a usable water filter system that could be used world wide.
Graphene Sieve Turns Seawater into Drinking Water
3 April 2017
Graphene-oxide membranes have attracted considerable attention as promising candidates for new filtration technologies. Now the much sought-after development of making membranes capable of sieving common salts has been achieved.