IoT-Water Quality Monitoring System Using ESP32

Abstract

Water contamination is fast becoming a worldwide challenge as a result of soaring water demands due to rapid urbanization and population growth. Water quality must be evaluated daily to meet the demand for clean water. Traditional techniques have been used in monitoring water quality. However, these techniques have several limitations, including being labor-intensive, lacking real-time data, and having significant operating and equipment expenses. This project aims to develop a monitoring system using ESP32 that can monitor real-time water quality. The system comprises ESP32 as a microcontroller, pH sensor, turbidity sensor, and temperature sensor to measure water quality such as pH, turbidity, and temperature. The sensors are connected to the ESP32 and interfaced with it. The data of the measured parameters were collected by NodeMCU ESP32 and sent to the Blynk application. By the end of the project, users can monitor the parameters, i.e., pH, turbidity, and temperature, on their smartphones through BlynkApp. The outcome reveals that temperature affects the turbidity and pH of the water, with the temperature directly proportional to turbidity. Meanwhile, the pH of the water decreases as the temperature rises.