Abstract: Water quality is critical for public health, agriculture, and industrial processes. Traditional monitoring relies on manual sampling and laboratory analysis, which is time-consuming, costly, and unable to provide real-time data. This project presents a Smart Water Quality Monitoring System using IoT technology, integrating a pH sensor and flow sensor with an ESP32 microcontroller. Sensor data is displayed on an LCD and transmitted via WiFi to a cloud platform for real-time remote monitoring. The system is cost-effective, automated, and scalable, enabling continuous monitoring, early contamination detection, and proactive water management for domestic, industrial, and municipal use.

Keywords: IoT, ESP32, pH Sensor, Flow Sensor, Water Quality, Real-Time Monitoring, Cloud Platform, Blynk.

Downloads: | DOI: 10.17148/IARJSET.2026.13376