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). As such, the Wood Mold is accessible by anyone via the open-source, online construction manual. Literacy, technical skills, or electricity is not required, though the user needs some way to acquire the blueprint. OHorizons collaborates with local organizations that are already active in local community development, including LEDARS Bangladesh, which supports the construction and distribution of the Wood Mold manual in that country. OHorizons also supports projects in Ecuador, Kenya, and Mali.

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Over the past year and a half, over 400 people or organizations have downloaded the Wood Mold Construction Manual to create their own locally sourced BioSand filters. As a result of these distributed Wood Molds and the collaborative work to utilize them, 5,500 people have gained access to sustainable safe drinking water access in their homes in 2016. Based on their success so far, OHorizons has set the ambitious goal of providing 1 million people in Bangladesh with safe drinking water access, via the Wood Mold BioSand filters, by 2021.

+ OHorizons