A liquid supply system for preparing and dispensing water-based liquids, such as hot water, chilled water and carbonated water, hot and cold beverages carbonated or non-carbonated, at a desired temperature and with at least one additive at a desired concentration on demand, the liquid supply system comprising: - a water supply comprising at least one water tank and/or a connection (130, 132) to a water main line, - at least one faucet having an outlet for dispensing the prepared water-based liquid and comprising: - a base unit fixable to a countertop by a nut and a base shoulder; and - a swivel spout connected to a fixed base and comprising an aerator, and - a water filter adapted to filter water from the water supply, - a water boiler adapted to heat water from the water supply to a predetermined temperature, and/or a water chiller adapted to cool water from the water supply to a predetermined temperature, and - a soda machine adapted to carbonize water from the water supply to a predetermined CO 2 concentration, wherein the system further comprises - an additive mixer adapted to mix said at least one additive supplied from at least one additive container at a predetermined concentration to water from the water supply, wherein the additive mixer comprises a pump for supplying a predetermined additive or several additives from the respective additive container; - a piping system connecting the water supply, the faucet, the water filter and the water boiler and/or the water chiller, the soda machine and the additive mixer installed in the liquid supply system, and - a communication and control system adapted to communicate with a user and to control the preparation and dispensing of the water-based liquid based on a communication with the user. - a water supply comprising at least one water tank and/or a connection (130, 132) to a water main line, - at least one faucet having an outlet for dispensing the prepared water-based liquid and comprising: - a base unit fixable to a countertop by a nut and a base shoulder; and - a swivel spout connected to a fixed base and comprising an aerator, and - a base unit fixable to a countertop by a nut and a base shoulder; and - a swivel spout connected to a fixed base and comprising an aerator, and - a water filter adapted to filter water from the water supply, - a water boiler adapted to heat water from the water supply to a predetermined temperature, and/or a water chiller adapted to cool water from the water supply to a predetermined temperature, and - a soda machine adapted to carbonize water from the water supply to a predetermined CO 2 concentration, wherein the system further comprises - an additive mixer adapted to mix said at least one additive supplied from at least one additive container at a predetermined concentration to water from the water supply, wherein the additive mixer comprises a pump for supplying a predetermined additive or several additives from the respective additive container; - a piping system connecting the water supply, the faucet, the water filter and the water boiler and/or the water chiller, the soda machine and the additive mixer installed in the liquid supply system, and - a communication and control system adapted to communicate with a user and to control the preparation and dispensing of the water-based liquid based on a communication with the user.