International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 06 | Jun 2025
p-ISSN: 2395-0072
www.irjet.net
SMART WATER TANK LEVEL MONITORING AND MOTOR PUMP CONTROLLING SYSTEMS USING INTERNET OF THINGS (IOT) FOR PREVENTING WATER WASTAGE Anirban Banerjee1, Ritam Paul2, Rudrajit Saha Roy3, Debraj Banik4, Sarbik Kumar Sinha5, Manabendra Maiti6 1, 2, 3, 4, 5 B.Tech Student, Dept. of Electronics & Communication Engineering, Techno International New Town,
Kolkata, West Bengal, India
6 Assistant Professor, Dept. of Electronics & Communication Engineering, Techno International New Town,
Kolkata, West Bengal, India ---------------------------------------------------------------------***--------------------------------------------------------------------relay module and a 16×2 LCD to provide a low-cost, Abstract – This research presents the design and standalone and automatic pump control solution. The second system is built using NodeMCU, enabling IoT based remote monitoring and controlling through the Blynk application. This allows users to view the current water level, receive alerts and control the motor pump by using a smartphone with internet connection and Blynk.
development of Smart Water Level Monitoring and Motor Pump Controlling System aimed at preventing water wastage and automating pump operation in water tanks. The system is implemented using two approaches: one based on Arduino Uno and another using NodeMCU with IoT integration. Both systems utilize an ultrasonic sensor to measure water level and a relay module to control the pump. In the Arduino based system, real time water level displays on the 16×2 LCD and the pump is automatically on or off based on predefined threshold values, ensuring the efficient water usage without manual interference. The NodeMCU based system enhances the solution by integrating with the Blynk IoT platform, allowing users to monitor water level and control the pump remotely through a smartphone application. It also displays the water level locally using LCD and sends alerts via the Blynk app when critical levels are reached. This project provides sustainable water management by reducing water wastage, providing user convenience and enabling both remote and local access.
The ultrasonic sensor ensures the accurate measurement of water levels, while the relay module acts as an electrical switch to operate the pump automatically based on the water level of the tank. The LCD provides the real time data for locally observations. The Blynk platform adds real time data visualization, remote control features and user-defined thresholds for alert notifications. The advantage of this Blynk platform is only accessible in NodeMCU based system. The proposed systems can be applied in households, apartments, farms and industries to conserve water, reduce human efforts and improve reliability in water supply management.
Key Words: Smart Water Monitoring, Automatic Pump Control, Ultrasonic Sensor, Arduino Uno, NodeMCU, IoTbased Water Management
2. LITERATURE REVIEW A system made with an ultrasonic sensor to monitor the tank water level, processed by Node MCU [1], while a water level sensor checks the sump. Data is sent to Blynk IoT for remote monitoring. The system replenishes the tank when water is low and stops pumping when full. Notifications alert users of tank status, power failures, and allow manual pump control. The study demonstrated the system effectiveness of wireless IoT based water level monitoring and controlling system.
1. INTRODUCTION Water is one of the most important, valuable and essential natural resources. Its efficient management is complex in both urban and rural areas. In house, agricultural sector and other sectors, water is stored in tanks and monitored manually that leads to overflow, wastage and inconvenience. Moreover, forget to turn off the pump after the tank is full or fail to switch on when the water level is low that leads to resource loss as well as component damage. To overcome these issues, the real-time monitoring technologies have emerged as practical solutions.
A system is designed a smart irrigation and water level detection system [2] using an ultrasonic sensor and Arduino Uno. The system monitored tank water levels and automatically initiated irrigation when levels were sufficient. Their research emphasized the importance of such systems in optimizing water usage in agriculture, specifically in drought-prone regions.
This paper presents the development of a Smart Water Level Monitoring and Motor Pump Controlling System implemented using two different microcontroller platforms: Arduino Uno and NodeMCU (ESP8266). The first system is built using Arduino Uno, an ultrasonic sensor, a 1 channel
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