"We started doing a ton of research," says Hangar’s head distiller, Caley Shoemaker. 

In Colorado you aren't allowed to capture any water -- not even runoff from your own roof gutters -- because you're stealing from the people who have the groundwater licenses. Once they figure out who owns the fog, they'll do the same here.

Are water rights complicated in SF? 

I figure whoever owns the water rights to the land under the fog also owns the water rights to the fog. 

Does fog belong to the air or to the land?  Is "belonging" defined by destination? Because when you capture rainwater you're diverting its path. But fog - where does fog go?

Good point, fog stays in the air:

http://articles.chicagotribune.com/1997-08-31/news/9708310133_1_water-vapor-fog-droplets

I'll just put this here:  https://youtu.be/3d3KXxpdSrk

Heh.