Solar energy is one of the most common and eco-friendly non-conventional types of energy source which is having various applications like purification of saline water. The experimental study of the present research work has been performed at the M.A.N.I.T, Bhopal M.P, India (latitude: 23°12′ 51″ N, longitude: 77° 25′ 0″ E) in the month of January 2018. The investigation has been performed on single slope solar still coupled with a flat plate solar collector to examine the thermal behaviour of the solar system and results have been presented in natural and forced convection mode. The overall efficiency reached up to 9.86% in natural mode where as 16.70% in forced mode. Therefore, forced mode solar still option is better and preferred.