A water treatment system comprising: a point of water entry to the water treatment system; a reservoir system having an inlet and an outlet, the point of water entry being fluidly connected to the inlet; an electrochemical device comprising a first compartment (34,36) and a second compartment (34,36), the first compartment (34,36) having a first compartment inlet (40,44) and a first compartment outlet (42,46), the second compartment (34,36) having a second compartment inlet (40,44) and a second compartment outlet (42,46); further comprising a first filter device (24a, 24b) fluidly connected to the first pump (20a, 20b) and further comprising a second filter device (24a, 24b) fluidly connected to the second pump (20a, 20b); a first liquid circuit with a circulation line (54,52) fluidly connecting the first compartment outlet (42,46) to the first compartment inlet (40,44) through the reservoir system and a first pump and a filter; the first liquid circuit including first and second valves (22a, 22b, 22c, 22d), a second liquid circuit with a circulation line (50, 32,48) fluidly connecting the second compartment outlet (42,46) to the second compartment inlet (40,44) through a second pump and a second filter; and the second liquid circuit includes third and fourth valves (22a, 22b, 22c, 22d); a drain in the second liquid circuit for discharge or transfer of the stream; a sensor for measuring at least one operating parameter of the water treatment system; a controller for actuating the valves to direct the flow of liquid through the system and a point of water use fluidly connected to the outlet of the reservoir system. a point of water entry to the water treatment system; a reservoir system having an inlet and an outlet, the point of water entry being fluidly connected to the inlet; an electrochemical device comprising a first compartment (34,36) and a second compartment (34,36), the first compartment (34,36) having a first compartment inlet (40,44) and a first compartment outlet (42,46), the second compartment (34,36) having a second compartment inlet (40,44) and a second compartment outlet (42,46); further comprising a first filter device (24a, 24b) fluidly connected to the first pump (20a, 20b) and further comprising a second filter device (24a, 24b) fluidly connected to the second pump (20a, 20b); a first liquid circuit with a circulation line (54,52) fluidly connecting the first compartment outlet (42,46) to the first compartment inlet (40,44) through the reservoir system and a first pump and a filter; the first liquid circuit including first and second valves (22a, 22b, 22c, 22d), a second liquid circuit with a circulation line (50, 32,48) fluidly connecting the second compartment outlet (42,46) to the second compartment inlet (40,44) through a second pump and a second filter; and the second liquid circuit includes third and fourth valves (22a, 22b, 22c, 22d); a drain in the second liquid circuit for discharge or transfer of the stream; a sensor for measuring at least one operating parameter of the water treatment system; a controller for actuating the valves to direct the flow of liquid through the system and a point of water use fluidly connected to the outlet of the reservoir system.