This espresso coffee machine, combined with a precision vertical-discharge coffee grinder, uses an independent water tank and a built-in filter element to decalcify and purify every drop of water. The water tank is equipped with ultraviolet light to prevent bacterial contamination, ensuring the quality of every cup of coffee. The machine comes with a cleaning reminder function for the grinder and coffee brewing system. After being used a certain number of times, the reminder light will start flashing to let the user know when they need to clean the machine to protect it from limescale and prolong its lifetime.