Learn how to get the concrete mix just right before pouring the Biosand Filter (BSF). Get tips and tricks to get the right concrete consistency to get a strong filter body with a smooth, even surface.
Learn how to get the concrete mix just right before pouring the Biosand Filter (BSF). Get tips and tricks to get the right concrete consistency to get a strong filter body with a smooth, even surface.
Can’t find what you need? Have more questions about a topic? Need advice on how to use a resource? Chat with a CAWST advisor.
Contact usCAWST is a Canadian charity and licensed engineering firm. We address the global need for safe drinking water and sanitation by building local knowledge and skills on household solutions people can implement themselves.