Microcontroller Water Level Controller

I want to automate the filling of an overhead storage tank with a compact microcontroller-based solution. The unit should sense the water level in the tank, trigger the pump when the level drops below a defined threshold, and shut the pump off once the tank is full... (Budget: ₹1500 - ₹12500 INR, Jobs: Arduino, Automation, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, Home Automation, Microcontroller, Sensor Integration)