DESIGN AND IMPLEMENTATION OF A SENSOR-BASED WATER QUALITY MONITORING DEVICE: Bachelor's Thesis

Abstract

This thesis presents the design, integration, and development of a sensor-based water quality monitoring device utilizing an ESP32 microcontroller, aimed at enabling real-time, accessible, and cost-effective water quality assessment. The system integrates four key sensors such as pH, turbidity, oxidation-reduction potential (ORP), and total dissolved solids (TDS), all managed through the ESP32 microcontroller. These sensors continuously measure fundamental water quality parameters, which are displayed on an LCD screen and transmitted via a Wi-Fi module for remote monitoring through computers or other smart devices. The system’s primary objective is to provide an efficient, portable, and affordable tool that allows users to easily evaluate water quality without the need for laboratory equipment. In the future, the system can be extended with additional sensors such as temperature, dissolved oxygen, or conductivity sensors to further enhance measurement precision and environmental adaptability. Overall, this research successfully demonstrates a compact, modular, and practical prototype that contributes to improving water quality monitoring practices and supports sustainable water management solutions.