Better filtration techniques ...
Published by Chandrasekaran J., Founder Director at Watsan Envirotech private Limited
Better filtration techniques are there than sand filters now, as they are very cumbersome and output is very less. Compact nano-clay filters which perform longer and are easier to wash and rinse and refit are available. You may visit watsan dot in to see the filters . There are add-ons as well like arsenic removal and fluoride removal as well