A heater arrangement system for a water provision system for controlling a water supply provided to a water outlet, the water outlet being arranged to provide heated water to a user, the heater arrangement system comprising: a water heating device (140, 150, 160) disposed remotely from the water outlet; a flow control which controls the flow of water; and a remote sensor configured to determine a presence of an object below the water outlet in a stream of water output from the water outlet; and a control unit communicatively coupled to the water heating device (140, 150, 160), and the flow control, the control unit being configured to a) receive an input from the remote sensor, and to b) control the water heating device (140, 150, 160) and/or the flow control, based on said input, to control a flow of water and/or energy being supplied to the water outlet; wherein, when it is determined that an object is present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a first temperature characterised in that when it is determined that the object is no longer present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a second temperature, wherein the second temperature is lower than the first temperature. a water heating device (140, 150, 160) disposed remotely from the water outlet; a flow control which controls the flow of water; and a remote sensor configured to determine a presence of an object below the water outlet in a stream of water output from the water outlet; and a control unit communicatively coupled to the water heating device (140, 150, 160), and the flow control, the control unit being configured to a) receive an input from the remote sensor, and to b) control the water heating device (140, 150, 160) and/or the flow control, based on said input, to control a flow of water and/or energy being supplied to the water outlet; wherein, when it is determined that an object is present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a first temperature characterised in that when it is determined that the object is no longer present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a second temperature, wherein the second temperature is lower than the first temperature. a control unit communicatively coupled to the water heating device (140, 150, 160), and the flow control, the control unit being configured to a) receive an input from the remote sensor, and to b) control the water heating device (140, 150, 160) and/or the flow control, based on said input, to control a flow of water and/or energy being supplied to the water outlet; wherein, when it is determined that an object is present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a first temperature characterised in that when it is determined that the object is no longer present below the water outlet in a stream of water output from the water outlet, the control of the flow of water and/or energy supplied to the water outlet includes using the water heating device to heat the water stream supplied to the water outlet to a second temperature, wherein the second temperature is lower than the first temperature.