How much of Iran’s water comes from desal operations?

Its my understanding that desalination is crazy inefficient and somewhat detrimental to the environment…but also, I’m not familiar with any large bodies of freshwater in Iran.

Edit: tried to just google it.

Wikipedia Link

Looks like its a fairly small portion, but they’ve been running into limits from natural sources and so desalination was seen as a way break through the barriers on that front.

At worst, it seems like the US bombing out all the desal infrastructure would set the nation back by a decade in its water security goals.