The column is made of the plastic container (diameter 40cm and 95cm high) with filter material is sand, which is
operating with very low flow water load (0.5-1 liters / minute) and has a structure as shown in Figure 17 . Thanks to the bucket
containing water and a float valve in place of the column input filter, so the amount of treated water by filtration column
was conditioned to respond to the changing needs of the water used in the household times
vary throughout the day. This has created convenience for households to use water during
rain. Research results stormwater treatment efficiency of the filtration column showed effective filtration column handle
suspended solids, turbidity above 95% and the pathogen (Ecoli and Coliform indicator) over 99% .
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