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Improvised Water Filters

Price
$16

This drawing explains how to make three types of low-cost water filters, and addresses simple water disinfection techniques. It is part of Essential Knowledge: a series of instructional drawings teaching basic skills for success in challenging situations.


This Risograph print is a limited edition overprint from the Wellspring portfolio. Printed by Justseeds member Mary Tremonte at OCAD in Toronto.



Posts by Colin Matthes