Hi Joseph. I need to Know ...
Published by Sidnei Siqueira, SANASA Campinas - Coordinator
Hi Joseph. I need to Know what especific problem you have, because you can use only chlorine in concentration suficient to have free chlorine in contamined water for few minuts or simply put in a botlle plastic (PET) in sun light for a day, but I need to Know what especific propblem eg, few or many people, or the amount of water.