Two good papers on combining Moringa with Chlorine for water disinfection.
Preston, K., Lantagne, D., Kotlarz, N. & Jellison, K. 2009 Turbidity and Chlorine Demand Reduction Using Alum and Moringa Flocculation before Household Chlorination in Developing Countries. J. Water Health (in press).
Babu, R. & Chaudhuri, M. 2005 Home Water Treatment by Direct Filtration with Natural Coagulant. J. Water Health 3(1), 27-30.