ECHO Asia
This step-by-step video demonstrates how to build a Biosand Water Filtration System (300L per day) following Aqueous Solutions' design model. More videos related to this topic are available on their site at aqsolutions.org.
See more related resources on ECHOcommunity.org
https://www.echocommunity.org/resources/16339bbb-ee7c-46f3-9403-da726b01c1ef
