How to build a water purifier the indigenous way?
There are many, many ways in which one can filter water with materials found freely in nature. Some of these materials are lime, sand, coal dust, gravel, any cotton fiber and so on, which act as natural filters for water. In case you have access to earthen pots, these too can filter water effectively. Recently a barefoot scientist had stumbled upon a new technique by which one could capture the sun’s UV rays to destroy all harmful bacteria with the help of only large earthen pots. The water purifiers build with this technology would have to be very large, i.e. it will need open-mouth, plate-type, shallow earthen pots, which would be some 4-5 feet wide. These set at a certain angle against the east side, would get the first sun rays reflected in the water capturing its UV rays, which would destroy all the bacteria in the water. All this is possible without any electricity or modern equipment. The people, who understand the movement of the sun and the effects of its rays in their own ind
