The following animation explains the process of developing charcoal filtration systems using sand. It is a simple process that helps to remove many, but not all, pollutants in water that can otherwise cause health problems.
ECHOcommunity represents a vast network of agriculture and community development practitioners around the world. The sharing of information is a core value in this community of practice. We believe that in sharing knowledge, people are empowered to find, test, and improve available solutions. In order to facilitate this, ECHOcommunity makes available resources produced internally, and those shared by network members. This resource may not necessarily reflect the views of ECHO Inc.
Many organizations and individuals have chosen to distribute their work through ECHOcommunity. If you have resources you would like to share, we believe in giving credit where credit is due. Community Contributed resources remain the property of their creators, but can benefit millions of people around the world.
To find out more about the process of submitting work for consideration please read ECHO's Policy on Intellectual Property and Sharing.
ECHOcommunity.org is the online collaborative membership community of ECHO, an international nonprofit organization. ECHO exists to reduce hunger and improve lives through agricultural training and resources. Working through regional impact centers around the world ECHO connects small-scale farmers, and those working to eliminate world hunger, with essential resources, and each other. These resources include a vast knowledgebase of practical information, experienced technical support and an extensive seed bank focused on highly beneficial underutilized plants.