Many people worldwide are suffering from a shortage and lack of water quantity. One of the proposed solutions is to monitor the water quantity by monitoring the water inside the storage tanks and reservoirs. This paper purposes an embedded smart tank system that can communicate with the user and control the pump remotely. Moreover, this smart tank is provided with a leakage detection sub-system that warns the user about wasted water in case of leakage. This tank is designed to save water by closing the pump in case of finding any leakage or the tank being filled up. The suggested system can adapt to the volume of the tank, making it a standalone embedded system that can be utilized for many types of tanks. This flexibility makes the system particularly adaptable. The proposed system consists of a microcontroller, ultrasonic sensor, flowmeters, a GSM module, a water pump, a solenoid valve, and two flow meter sensors. The ultrasonic sensor is used for detecting the water level and flowmeters are used to determine the inward and outward flow rates. The GSM module is designed to connect the user and the tank. It also receives commanding SMS from the user to manually control the system as an interrupt. The testing of the designed prototype clarifies that the system operates well, and the process is done properly. The sensitivity analysis test yielded 1.65%, 2.2%, and 4.15% deviation from the simulation values for the input flowmeter sensor, output flowmeter sensor, and ultrasonic sensor, respectively.