Laz,
I live in the SLC area, so I can answer at least some of these. The water situation is already bad, even thou there is tons of denial at the local political level. Its consistently the 2nd driest state in the country, and relies heavily on productive winters to support the fast growing population which has doubled in just the last 25-30 years. It would only take 2-3 years of below average precipitation to put many areas of the state in a critical water crisis as no new dams(to my knowledge) have been built in those previous 25 years.
Additionally, given Northern Utah is a high desert, unlike cities like Las Vegas, Albuquerque, Phoenix, etc where most people forgo big lawns and massive trees, that is not the case here in Utah and there is little local will/incentives to change.
All that being said, I suspect the Buck Club will not be not in a dense population area, so it may be able to tap into a different water source.
P.S. I was also under the impression this club/course would be private, so I don't know if it would be a destination kind of thing..