Biosand Filters: How they work, and how they change lives - GROSCHE
Just a Drop - Biosand filters are proof that nature knows best. By using a 100% natural filtration process, biosand filters (BSFs) remove up to 99% of bacteria and 95% of waterborne
See how this BioSand filter brought Nirmala's family JOY! - GFA World
Biosand filter: An efficient way to remove biological contaminants and suspended solid particles from water - SM Sehgal Foundation
HYDRAID® - Wishing Well International FoundationWishing Well International Foundation
Biosand Filter : 19 Steps (with Pictures) - Instructables
Providing Safe Water in Africa - Heaven's Family
Biosand Water Filter Sustainability and Khmer Language Study in Cambodia « OSU Abroad
Biosand Filters – Bareebo
Neighbors' improved health convinces Muslim man to ask for BioSand Filter - Samaritan's Purse Canada
Biosand Filter Training - A Rocha USA
Biosand Filter Installation Update - August 2018 - Spring of Hope
HYDRAID® - Wishing Well International FoundationWishing Well International Foundation
Young Innovators Fair — OHorizons
Biosand Water Filter - A Rocha USA
Reports on Clean Water for 500 Families in Cambodia - GlobalGiving
Project #101 | Providing Clean Water in Cambodia — One Day's Wages
Water Filter Provides Safe Water for Families - Samaritan's Purse Canada
