Review on Under sink filter Atoll A-550 STD (A-560E) 1/2" by Aneta Jagieliska ᠌

filters perfectly: tap water 340mg/l - after the filter 25mg/l. it is imperative to install a pressure regulator and a check valve “at the inlet” before the filter, otherwise after some time, due to failures in the water supply, the shut-off valve fails and starts working as it pleases - it does not turn off the drainage and the water can run away all the time or up to moment until there is a jump in the pressure drop in the water supply. in short, an unreliable design in terms of correct and trouble-free operation, and yes, the water is the purest