A mixing cartridge for faucets which comprises: - a containment enclosure; - a hot water inlet and a cold water inlet, both located on a first end face of said containment enclosure and both leading into a mixing chamber; - a dispensing outlet, which is in fluid communication with said mixing chamber and is arranged on a second end face of said containment enclosure which is opposite with respect to said first end face; - a base disc interposed between said inlets (31, 32) and said mixing chamber and comprising a pair of intake ports, each one of which establishes a fluid communication between one of said inlets (31, 32) and said mixing chamber; - an adjustment element which is superimposed on said base disc and can move with respect to said base disc so that by moving with respect to said base disc the degree of opening of said intake ports is varied; - a kinematic actuation mechanism connected mechanically to said adjustment element, which can be connected to a lever for adjusting the faucet and is configured to guide the movement of said adjustment element with respect to said base disc; said mixing chamber being defined between said adjustment element and said base disc, said kinematic actuation mechanism being accommodated above said adjustment element in a dry chamber which is hermetically isolated from said mixing chamber and from said inlets (31, 32) and from said dispensing outlet, said mixing chamber being in fluid communication with said dispensing outlet via at least one duct for the outflow of mixed water, which is internal to said containment enclosure and external to said dry chamber, so that the water does not come into contact with said kinematic actuation mechanism, characterized in that said kinematic actuation mechanism is accommodated above said adjustment element along the direction of the dispensing outlet, said adjustment element comprising: - a lower disc, which is adjacent to said base disc and can slide on it and circumferentially delimits said mixing chamber, and - an upper disc, which is fixed to said lower disc, above it, and in an upper region delimits said mixing chamber, said dry chamber being at least partially surrounded by a watertight wall which protects the actuation mechanism from water and also the adjustment element and the base disc. - a containment enclosure; - a hot water inlet and a cold water inlet, both located on a first end face of said containment enclosure and both leading into a mixing chamber; - a dispensing outlet, which is in fluid communication with said mixing chamber and is arranged on a second end face of said containment enclosure which is opposite with respect to said first end face; - a base disc interposed between said inlets (31, 32) and said mixing chamber and comprising a pair of intake ports, each one of which establishes a fluid communication between one of said inlets (31, 32) and said mixing chamber; - an adjustment element which is superimposed on said base disc and can move with respect to said base disc so that by moving with respect to said base disc the degree of opening of said intake ports is varied; - a kinematic actuation mechanism connected mechanically to said adjustment element, which can be connected to a lever for adjusting the faucet and is configured to guide the movement of said adjustment element with respect to said base disc; said mixing chamber being defined between said adjustment element and said base disc, said kinematic actuation mechanism being accommodated above said adjustment element in a dry chamber which is hermetically isolated from said mixing chamber and from said inlets (31, 32) and from said dispensing outlet, said mixing chamber being in fluid communication with said dispensing outlet via at least one duct for the outflow of mixed water, which is internal to said containment enclosure and external to said dry chamber, so that the water does not come into contact with said kinematic actuation mechanism, characterized in that said kinematic actuation mechanism is accommodated above said adjustment element along the direction of the dispensing outlet, said adjustment element comprising: - a lower disc, which is adjacent to said base disc and can slide on it and circumferentially delimits said mixing chamber, and - an upper disc, which is fixed to said lower disc, above it, and in an upper region delimits said mixing chamber, said dry chamber being at least partially surrounded by a watertight wall which protects the actuation mechanism from water and also the adjustment element and the base disc. - a lower disc, which is adjacent to said base disc and can slide on it and circumferentially delimits said mixing chamber, and - an upper disc, which is fixed to said lower disc, above it, and in an upper region delimits said mixing chamber, said dry chamber being at least partially surrounded by a watertight wall which protects the actuation mechanism from water and also the adjustment element and the base disc.