Pastor Gregorio with his wife and five daughters enjoy their new Biosand Water Filter. Water from the river can now be filtered into clean healthy water
Classroom instruction with practical hands on training works well. All Biosand Water Filter materials are in both Spanish and English for the students
Our Biosand Water Filter training is a combination of classroom and practical hands on experience. We work with the students until they are get it
Mixing cement by hand for the Biosand Water Filter. Its traditional and hard work, but does get you in shape
Another Biosand Water Filter has just been poured. The curing time before we remove it from the the steel mould is 24 hours
Once the cement cures for 24 hours the filter is removed from the steel mould and we have another new all Natural Biosand Water Filter
We can produce 100 filters a month that will look after 1000 people. One filter per family or it can be shared by 2 or more families. There is no ongoing costs and the sand never has to be replaced. See the Biosand Water Filter page for details. This is the most robust, practical, affordable filter available.
The inner steel mould is removed after curing for about 24 hours. Student learn every aspect of making the Biosand Water Filters so they can address the health concerns of their own people.
One filter produces up to 10 gallons of clean, safe, healthy water per hour with no ongoing costs. There are no cartridges to change and no parts to replace. If you have any questions, please send us an email.
We use locally available materials, local labour and local Leadership. Nothing is imported. Everything is made locally in Nicaragua by those that we train. The project becomes 100% managed by Nicaraguans
The children benefit from the Biosand Water Filters the most. The filter removes virus, bacteria and parasites to produce clean, safe healthy water for the family





















































































































