In this paper, IoT based control mechanism for solar water pumps employed for academic campus is presented. Basaveshwar Engineering College Bagalkote (BEC) (Latitude 16° 59′, Longitude 75° 59′) is using solar photovoltaic based water pumps, for water distribution in the campus. Three water pumps of 0.5, 1, and 2 HP are employed with 400, 900, and 1800 W panels respectively. The overhead tanks of the main building of the campus are filled by these pumps. The operators from the campus development department claimed the difficulty in operating the pumps for filling the overhead tanks. Due to variation in solar radiation it is difficult to monitor and manage physically, the different tanks with sufficient water availability. This issue not only results in water wastage by over spilling but also requires significant human effort and time for continuous observation for manual adjustments. In view of this, it is proposed to provide the IoT based solution for control mechanisms of SPV based water pumps. The proposed circuitry is successfully implemented and control of pumps is carried using mobile phones. Further, the system with 0.5 HP AC grid connected water pump is also additionally established to pump water during prolonged cloudy conditions. The economic analysis of the said water pumps for the last eight years was conducted. It is observed that the solar PV system is economical, very effective and also resulted in significant energy savings. Further, the implementation of the proposed IoT methodology resulted in the smooth operation of the pumps from the remote locations.