The Biosand filter is an innovation on traditional slow sand water filters, specifically designed for intermittent or household use. The filter can be produced locally anywhere in the world because it is built using materials that are readily available. It is simply a concrete container, enclosing layers of sand and gravel which trap and eliminate sediments, pathogens and other impurities from the water.
Plastic can also be used to manufacture the container, however, using concrete has several advantages:Biosand Filter
* Cement can be easily acquired in most developing countries.
WaterAid works in 17 countries around the world providing sanitation and hygiene education.
Watercan is a Canadian charity dedicated to ending poverty by helpin the world's poorest people gain access to clean water, basic sanitation, hygiene education.
They work mainly in Ethiopia, Uganda, Kenya and Tanzania.
This site provides information and resources on water and sanitation.
This site provides information and resources on water, sanitation and the environment with specific focus on children.
This site provides a number of resources and information on water, health and sanitation.
The CHP’s Dry Toilet System offers an ecological and economical alternative - an innovative system that helps saving water and money.
The site provide information and drawings on the dry toilet system.
CAWST - Centre for Affordable Water and Sanitation Technology
The Centre for Affordable Water and Sanitation Technology (CAWST) is a registered Canadian charity that provides professional services - education, training and technical consulting - to organizations that serve the poor in developing countries. CAWST doesn't fund or implement projects. Instead, we provide the services that are the catalyst for independent, community-driven water and sanitation projects.
* Empowers, motivates and generates grass roots action within the community;
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