| Summary: | Access to safe drinking water is essential to nurturing human life on earth. Polluted air and unsanitary water can cause health problems. Unhygienic water can cause stomach and health-related problems. Contaminated water is accelerating the growth of microorganisms. A specific range of water quality parameters, mainly temperature, pH, total dissolved solids (TDS) and turbidity, can degrade the growth of this bacteria. This presented paperwork is to develop a smart water quality monitoring system using four sensorsand an IoT platform to help determine water quality. It is to analyse the parameters of water samples such as tap water, coway water, river water, pond water, and lake water whether these water samples are in the threshold range for drinking or not. The device is initially used to measure pH, turbidity, total dissolved solids (TDS) and temperature, and then sent the information to the microcontroller Arduino Uno. Users can connect the device to a mobile phone via Bluetooth, and then an android-based mobile application called HC-05 Bluetooth Terminal displays real-time test data. These values of each parameter are also displayed on the I2C LCD screen connected to the microcontroller. © 2022 IEEE.
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