A laundry washing machine having an outer casing and comprising, inside said outer casing: a washing tub; a rotatable drum which is housed in axially rotatable manner inside the washing tub and is structured for housing the laundry to be washed; an electrically-powered main motor assembly which is structured for driving into rotation the rotatable drum about its longitudinal axis; a detergent dispenser which is structured for supplying detergent into the washing tub; a fresh-water supply circuit which is structured for selectively channelling a flow of fresh water from the water mains towards the detergent dispenser and/or the washing tub; an internal water softening device which is connected to said detergent dispenser and/or said fresh-water supply circuit for being crossed by the fresh water directed towards the detergent dispenser and/or the washing tub, and is filled with a water softening agent capable of reducing the hardness degree of said fresh water; and a main electronic control unit which controls the main motor assembly, the detergent dispenser and the fresh-water supply circuit so as to implement a washing cycle selected by the user; the laundry washing machine additionally comprising: a brine reservoir for receiving and accumulating a given amount of brine; a pump assembly capable of selectively moving the brine from said brine reservoir to said water softening device for regenerating the water softening properties of said water softening agent; and a water distributor module for supplying water to said detergent dispenser; said water distributor module in turn comprising: a manifold body having a water inlet and a number of water outlets; electrically-operated, internal water channelling means which are at least partially located inside the manifold body, and are structured to selectively put the water inlet of the manifold body in fluid communication with any one of the water outlets of the same manifold body; the laundry washing machine being characterized by the water distributor module further comprising a local electronic control unit which is discrete from the main electronic control unit, is accommodated in a corresponding seat formed on said manifold body and moreover powers and/or controls both said pump assembly and said electrically-operated, internal water channeling means; the main electronic control unit being located on a supporting structure which is different and discrete from the manifold body of the water distributor module, and electronically communicating with the local electronic control unit so that the pump assembly and the internal water channeling means are driven by the local electronic control unit according to the signals arriving from said main electronic control unit. a brine reservoir for receiving and accumulating a given amount of brine; a pump assembly capable of selectively moving the brine from said brine reservoir to said water softening device for regenerating the water softening properties of said water softening agent; and a water distributor module for supplying water to said detergent dispenser; said water distributor module in turn comprising: a manifold body having a water inlet and a number of water outlets; electrically-operated, internal water channelling means which are at least partially located inside the manifold body, and are structured to selectively put the water inlet of the manifold body in fluid communication with any one of the water outlets of the same manifold body; the laundry washing machine being characterized by the water distributor module further comprising a local electronic control unit which is discrete from the main electronic control unit, is accommodated in a corresponding seat formed on said manifold body and moreover powers and/or controls both said pump assembly and said electrically-operated, internal water channeling means; the main electronic control unit being located on a supporting structure which is different and discrete from the manifold body of the water distributor module, and electronically communicating with the local electronic control unit so that the pump assembly and the internal water channeling means are driven by the local electronic control unit according to the signals arriving from said main electronic control unit.