Desalination system could produce freshwater that is cheaper than tap water::A new solar desalination system takes in saltwater and heats it with natural sunlight. The system flushes out accumulated salt, so replacement parts aren’t needed often, meaning the system could potentially produce drinking water that is cheaper than tap water.
The jury is not still out on this. You're posting what is essentially paid advertising for the industry.
Put it like this: You can't take water out of the ocean and expect everything to work as it has been, and you also can't just dump salt into it and expect the same. It's pretty fucking obvious.