A biosand filter uses gravity, sand, and natural biology to turn unsafe water into clean, life-giving water with no electricity, no chemicals, no waste.
In Cambodia, this simple science is transforming entire communities, giving families access to safe water for the first time in generations.
Biosand filters are a proven, low-maintenance technology that transforms unsafe water into clean, drinkable life without the need for electricity, chemicals, or complex parts.
Each one is handcrafted by skilled teams in Cambodia using local materials, and built to last for over a decade.
Here’s how they work:
Extensive research by the Center for Affordable Water and Sanitation Technology (CAWST) shows biosand filters remove:
These numbers may vary slightly based on usage and water quality, but the results speak for themselves. With proper use, biosand filters produce safe drinking water for 5-8 people for 10+ years.
Families receive basic hygiene training and a demonstration of how to use and maintain the filter. Our local teams provide support as needed to ensure every filter remains effective long term.
The filters require minimal upkeep:
When you protect your home’s water, your garden grows the way nature intended, full of life, free from chemicals, and bursting with colour.
