The world demand for potable water is steadily increasing with the rise in population, Since there is limited availability of potable water resources and plenty of impure water available for potential conversion into potable water. Water desalination using solar energy is a suitable alternative for potable water production from impure water. The main purpose of this study is to design a water distillation system that can purify water from any source. It is cheap, reliable and depends only on renewable solar energy. A solar still was designed with an airtight basin, in which saline or contaminated water is evaporated and condensed on the top cover for collection. During the process, the collected water is purified and clean water is obtained. The designed model is a single basin solar still of 600 mm x 350 mm base area, and glass cover of the still was inclined at 30 °C. Temperature of glass cover, temperature of impure water inside still and humidity were recorded continuously. The solar still produces 1.2 litres of pure water from 15 litres of dirty water during 6 hrs of time. From the results obtained it can be concluded that, as solar intensity increases the production of distillate would be higher. So, the solar still converts the impure water into pure water using the renewable solar energy. The incoming solar radiation from the sun heats the water and this water gets evaporated and condensed into pure drinkable water.