Setting up the apparatus
Fill a plastic bowl with tap water and mix some salt into it. Place a collecting jar inside the basin right in the middle, ensuring that the basin's water is not above the height of this collecting jar.
Covering the basin
Cover the top of the basin with a plastic sheet and seal the edges by a string or rubber band, ensuring it is secured tightly at the edges. After covering, place some weight or stone over the plastic sheet in a way that it is exactly on top of the collecting jar.
Taste the Water
Take the collecting jar out of the basin and taste the water. You will notice that it is absolutely pure and there is no salt in it. This is because when water evaporates, it leaves all impurities behind and the sunlight provides a natural way for water evaporation.