Advantages and disadvantages of desalination plants?

Advantages Disadvantages *It can work as a backup incase the dams run out of water or are low and if there is a drought *It cost to much money to pay for the plants *The ocean is always there and easy to get to *It reduces oxygen levels in the air and results in an increase of the density of any discharged waste water. *Its unlimited source of water. *make more green house gasses so there for more pollution in the atmosphere *It doubles the amount of salt in the ocean's and impacts on the environment for animals and humans.
it allows you to use all the water in the world, the price has been going down