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BIOSAND WATER FILTRATION

 

FILTRO DE MAYA

Bio-sand technology was first developed by Mayans in the great cities of Tikal, El Mirador and others over 1,000 years ago. Twenty years ago the Center for Affordable Water and Sanitation Health Technology, CAWST, in Calgary Alberta began studying and perfecting bio-sand for use in developing countries. The simple technology of bio-sand filters depends upon replicating naturally occurring sand and gravel beds where friendly microbes live upon pathogens and virus. Purity of user-maintained  bio-sand filters consistently test near 99% pure. 


Los Buenos Vecinos has successfully made home and community size filter systems. Community systems are designed to provide pure water for about 25 families.  

THE BUSINESS MODEL

Los Beunos Vecinos approach to the needs of pure water and sanitation is highly dependent upon education, end-user and whole community engagement, and behavioral change. Teachers, health officials and elected officials form WASH committees. Each family participates in building their filters.

USABLE FOR ALL

Our products use simple technology, are scaleable from household to community size, and are sustainable; that is, ongoing operations and community growth are user funded. User fees, 5 Quetzels, $0.65 per month, provide adequate funding for maintenance, continuing education of user groups, occasional water purity tests, and provide for up to 8% more filters annually for population growth.

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