We recommend these filters: 1.Big Berkey Gravity Water Filter - 2. Doulton Gravity Water Filter - 3. British Berkefeld. For more details check these filters in the search box below.

The cycle of water in nature

Water from big bodies of water such as oceans, lakes and rivers, evaporates and rises high up in the atmosphere, where it may cool down and turns back into water. Rain falling onto oceans and land completes the cycle.Water can become toxic at any point in the cycle, even in the most pristine parts of the earth.