• Eric


    Hi Lena

    I can forward you a document about filters used in Nepal that were made from plastic. I don\’t believe that it makes any difference to the bacteriological efficiency, although if the sides are smooth there may be short-circuiting but I think that is an unproved theory as yet. In any case, you can always roughen the inner walls if needed to be sure.

    Email me at ericfewster @ bushproof.com if you would like this info.



  • EricReply To: Biosand Filters – The next step – Homemade biological filter