Water quality and quantity measuring system with prepaid billing

Abstract

Due to increase in water pollution and climate variations, the water should be use smartly. In addition to this, the quality of water must be checked before drinking. In this project, an online android app-based system has been designed to check water quality (pH and turbidity). Beside it, a prepaid water billing system has been added for smart water use. The control methodology designed in a way that the controller regularly detects the water level and quality (pH and turbidity) in the tank, and notify the user about the states on the mobile app. If the water level in the tank is low, then user can purchase the water by entering a passcode in mobile app. After the confirmation of the passcode, the controller finds the solenoid valve opening time according to the user input. The controller automatically turns off the valve after calculated time. This water quantity and quality monitoring system can be easily implementable for the domestic and industrial users.