Designing a simple water ...
Published by Laxman Kharal, S-Asia Regional WASH Adviser at Terre des hommes
Designing a simple water treatment facility for household level out of plastic work mostly that uses chlorine solution and activated carbon (this in cartage, in which only the activated carbon would be changed using the same cartage); the filter would be patented and given to social entrepreneurs for its local manufacture and distribution to reach the target group – with funding support where necessary.
Similarly the chlorine solution and activated carbon would be made available locally to the users of the filter (which should not cost much as this would also be produced in bulk and marketed socially) which the users would purchase (most of the users would purchase with some subsidy from the government for those who may wish to purchase but may not be able to).
In areas where the water would be turbid as well, the turbidity would be removed by the users either using a simple filter such as sand or ceramic (the ceramic filter here will not be required to be changed every six months) or with alum followed by screening. This would be backed up by effective marketing/promotion and a advocacy component – following sound research.
This is for areas where the bacteriological quality of water is not yet ensured besides having the access to water (this include shallow tube wells – which would in most cases be free of turbidity), and for the period before a safe communal system would take over.