This research provide information on ability of Bio-sand filters to improve water quality and to reduce diarrhoeal disease in user compared with non-user households in a randomized controlled trial in Bonao, Dominican Republic, during 2005–2006.
STAUBER, C. ORTIZ, G. LOOMIS, D. SOBSEY, M. (2009): A Randomized Controlled Trial of the Concrete Biosand Filter and Its Impact on Diarrhoeal Disease in Bonao, Dominican Republic. The American Society of Tropical Medicine and Hygiene