Majority of earth’s surface is covered with water but less than 5% is useful. So water conserving has become a major issue so certain water management steps are to be taken. Measuring water level is an important task from government and residence side. Thus, existing management systems has to be updated [1]. In this paper, we investigate the water level management using ultrasonic sensor which detects the amount of water present in the tank and returns the percentage of water present in it. This system has an Arduino, motor pump, LCD display, over-head tank, resource tank, buzzer and an LED. All components are interfaced with the Arduino and works by automation as per uploaded code. We divided the over–head tank by mean of percentages likely 10%, 20%...100%. 10% is the condition of the tank where the quantity of water present in it is very less and finally 100% is maximum condition. We have to monitor and maintain the tank when the water in it is getting less, but in this we make use of a buzzer so whenever the water level percentage is about 10% the buzzer, makes sense and automatically the relay based motor starts and standstill up to reach of 100% of the tank. So no one is required to monitor the tank and for switching of the motor. The main thing we employed is echo, which can be easily understood by an example consider you are in a silent cave when you produce sound you will listen the same thing by high intensity and this is called echo. Like example the ultrasonic sensor has two small openings on it. In which one opening sends the high frequency sound pulse called as ultrasonic waves like a small speaker (sender) and other opening receives them like a small microphone (receiver) [2] the explanation can be better understood by fig (1).

Ultrasonic waves, echo, trig, Arduino, smart water, water level management, automation, relay, water level, trig, echo

[1] Yogita patil, Ramandeep Singh, “Smart tank Management System for Residential Colonies Using Atmega 128A Microcontroller”, International Journal of Scientific & Engineering Research, Volume 5, Issue 6, June-2014.
[2] http://arduino-info.wikispaces.com/Ultrasonic+Distance+Sensor
[3] Asaad Ahmed Mohammedahmed Eltaieb, Zhang Jian Min, “Automatic Water level control System”, International Journal of Science and Research, volume 4 issue 12 December 2015.
[4] Partik Roy, “Construction of Digital Water Level Indicator and Automatic Pump Control System”, International journal of research, volume-3 issue-13 September 2016.
[5] http://arduino-info.wikispaces.com
[6] https://components101.com/ultrasonic-sensor-working-pinout-datasheet
[7] Beza Negash Getu, Hussian A. Attia, Automatic Water Level Sensor and Controller System, IEEE volume-1 issue-3 2016.
[8] https://circuitdigest.com/microcontroller-projects/arduino-ultrasonic-sensor-based-distance-measurement
[9] J.A Jodice, “Relay Performance Testing”, IEEE, volume- 12 issue- 1, 1997.
[10] https://www.electronics-tutorials.ws/resistor/potentiometer.html
[11] Abhishek Saini, Shikhar Rana, Simranjeet Singh, Mohit, Harpreet Kaur Channi, “Designing and Modeling of Water Level Indicator”, International Journal of Scientific Research in Computer Science, Engineering and Information Technology,
Volume 2, Issue 6, November-December 2017.
[12] Supriya R. Khaire, Revati M. Wahul, “Water Quality Data Transfer and Monitoring System in IOT Environment: A Survey”, International Journal of Scientific Research in Computer Science, Engineering and Information Technology, Volume 2, Issue 6, November-December 2017.