Abstract: Water quality monitoring is essential for ensuring safe drinking water and protecting public health. Traditional methods of testing water quality are often time-consuming and require laboratory analysis. This paper presents a real-time water purity monitoring system using an Arduino-based embedded platform. The system employs a Total Dissolved Solids (TDS) sensor to measure the concentration of dissolved particles in water and assess its purity level.The measured TDS values are displayed on an LCD screen and also transmitted via a Bluetooth module for remote monitoring. An alert mechanism using LEDs and a buzzer is incorporated to indicate safe and unsafe water conditions based on predefined threshold levels. The system continuously monitors water quality and provides instant feedback to the user.The proposed system is cost-effective, portable, and easy to use, making it suitable for household and environmental monitoring applications.

Keywords: Water Quality Monitoring, Arduino, TDS Sensor, Real-Time Monitoring, Water Purity, Embedded System, Bluetooth Communication, IoT

Downloads: | DOI: 10.17148/IJIREEICE.2026.14341