Quality control in the decentralized production of biosand filters: a pilot workshop in Zambia

The locally produced, concrete biosand filter is a household water treatment option for improving water quality. As of December 2015, over 830,000 biosand filters had been implemented in 60 countries around the world. Local, decentralized production is an advantage of the technology but also creates challenges with quality control. This paper describes the development, piloting and evaluation of a quality control workshop in Zambia. The overall reaction to the workshop was positive. Based on results from the pilot, CAWST will revise the workshop to better achieve learning outcomes and improve the efficacy of the workshop.