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Sand Creek High School
Colorado Springs, CO
Biosand filter

The Sand Creek High School InvenTeam is inventing an improved biosand filter for clean water in developing countries, specifically in Haiti and the Philippines. Improvements include the addition of probiotic supplements to the bio-layer and the shortening of the gestation period from a month to a week. Different forms of microbial life will be used to foster the growth and protection of the bio-layer. Target cost savings is estimated to be a factor of two to three percent.