Any body prefers to buy two buckets (one of them inverted) can go for it. Says 18 liters. Dont fill beyond first bucket. If you do you can be sure that you will clean your kitchen at time you do it. Have used HLLs Pureit and never faced such issues. These guys rolled these out to compete with their market but failed because of poor R & D.
Still if anybody goes for it, then buy one more bucket and mop to clean your kitchens.Now on purification - Who knows that the water is safe for drinking. Only one main filter module only other one is just a hard cloth!