Non-profit organization OHorizons recently created an innovative BioSand Filter that can deliver clean water at 1/10th of the cost of traditional methods. The filter hinges upon an open-source Wood Mold that can be easily built by anyone using the construction manual, which is available for free online. The team of technical, social, and commercial professionals at OHorizons creates simple, easily implemented, low-tech applications that empower communities without the need for external capital or expertise. When designing new products, they follow certain principles to ensure wide adoption. The design must be simple, low-cost, locally sourced, flexible to meet the needs of different communities, and open-source (available to the public, non-proprietary).

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