Kent Gold Optima is a Small 10L water purifier.But the work that it do is big.It purifies water and you will the difference between the tap water and the purified water after tasting.It involes 3 stages of filtering.First the water is filtered through sediment filter to remove the dirty particles and then the water passes through the activated carbon particles and they will soak all the impurities in the water.And last and final stage, the water gets pass through the UF Membarane which helps to remove the Cyst and bacteria from the water and makes the water perrfect and purified for drinking.It is a certified water purifier and will not disappoint u.Last and but least .Go for Kent Optima and Enjoy the pure water for u and ur family.