The article is pretty terrible on the details. It seems that this CPV device is intended to be built near the ocean, and use salt water for cooling; the water can then be run through a desalinization system.
The hot water can then be used in an attached desalination system that creates drinkable water by passing itwater[sic] through a Gortex-like membrane.
According to Wikipedia there are several desalinization processes available that use heated water and a membrane. http://en.wikipedia.org/wiki/Desalination#Desalination_powered_by_waste_heat
The article is vague on how the CPV system provides cooling, but the CPV system produces heat as a byproduct, and it is possible to use extra heat for cooling. There are refrigerators that run on propane, with no motors. (There is a sort of pumping of coolant that relies on gravity.
There are a lot of places in the world that get lots of sunlight, are near salt water, and could use more fresh water. So this sounds like a good idea, but it isn't going to be installed everywhere.