In this raw scan model you will find a cultural heritage system from the Canary Islands in order to obtain drinkable water from almost any source of natural running water. Basically it consists in a large volcanic porous stone carved in such shape it can contain water on top and filter it slowly to the basin down bellow.
A beautiful example of ecological water filtering that includes vegetation and stone on its process, usually placed in a shadowed area of the house, this facility could allow families to inhabit many places.