Abstract: Water is the prime necessity of every living being in the world. Being the most depleted and most polluted indispensable resource, we are in dire need of saving every possible drop of water. Over two thirds of earth's surface is covered by water and others are taken by land. As Earth's population continues to grow, people are putting ever-increasing pressure on the planet's water resources. Population, household size, and growth and affluence all affect how much water is used. Factors such as climate change have increased pressures on natural water resources especially in manufacturing and agricultural irrigation. In a sense, our oceans, rivers, and other inland waters are being squeezed by human activities not so they take up less room, but so their quality is reduced. Poorer water quality means water pollution. The usage of water being the same, cannot be reduced beyond a certain extent. Hence, to preserve the water that is remaining, the quality of the water is to be monitored. The water quality can be decided using different parameters like pH,temperature and Dissolved Oxygen[DO] which are recommended to be measured for determining the quality of water. Wireless Sensor Technology is been used in IoT Environment using Arduino technology. The system's measurement capacity ranges from 0°C to 80°C for water temperature; from 0 to 14 on pH scale. The main goal of this application is that , it ensures to be an effective way for real time water quality monitoring at the lowest cost possible

Keywords: IoT, WSN, Dissolved Oxygen[DO], pH