The Vitapod machine features a recirculating filtration system, drawing the water through several times over 10 minutes, so your drinks are always crisp, clean and refreshing. It reduces many impurities including lead, chlorine (odor and taste), algae, micro-plastics, rust, parasites, incrustants, colloid, silt, cryptosporidium and suspended solids >1 micron (particulates class II), among many other contaminants.