The water was passed through the filter beds of all the control units and experimental filter units. Then the filtrate from all the units were analyzed separately for fluoride,
arsenic and coliform bacteria concentration at a duration of 2, 4, 6, 8, 10 and 12 h of the filter run according to the standard methods (APHA, 1989). The contribution of crushed brick was also calculated for percent removal of fluoride, arsenic and coliform bacteria under all the treatment batches.