Design and implementation of IoT sensor based drinking water quality measurement system

Abstract Water is essential for the living being. Water plays major role in all metabolic activity. After being filtered at the treatment plant, water is used for drinking. Mostly the water supplies to the houses and industry is through underground pipe line network system. If there is any damage/leakage in the pipe line system, water gets mixed with impurity and is polluted. High DO value speeds up corrosion in water pipes. Due to this corrosion, drinking water quality gets affected so there is need to measure DO levels in the water supplied. This paper presents the drinking water quality measurement system with the help of various sensors such as temperature, TDS, pH and DO sensors. Drinking water, cold or hot, keeps human body hydrated and healthy so it is very essential to monitor the drinking water temperature. Thus, required added temperature sensor in the developed module; TDS sensor gives the measurement of solid object dissolved in the water; pH sensor was installed to monitor the content of acidic substances in water and the DO sensor used to monitor the dissolved oxygen, it added better taste of drinking water. Developed system was successively tested on tube well, tap, rain and RO water. The developed system also connected to the RTC module which used to determine the real time, date and day along with the sensor data. The data collection method uses an Arduino mega2560 microcontroller and GSM SIM 900 module. The data from sensors is transmitted using a wireless connection with the help of GSM SIM 900 module to the database server at Thingspeak. The data sent can be viewed using an Android IoT application connected to the server. The data displayed on the applications in real-time successfully, so the users able to check the sensors value on android mobile screen.