Solar distillation is a relatively simple treatment of brackish or Sea (i.e. contain dissolved salts) water supplies. Distillation is one of many processes that can be used for water purification and can use any heating source solar energy is a low tech option. In this process, water is evaporated; using the energy of the sun then the vapor condenses as pure water. This process removes salts and other impurities.Solar distillation is used to produce drinking water or to produce pure water for, Restaurants Hotels, laboratories and hospitals. Since the output water has less than 20 TDS, it requires adding minerals for drinking purpose.