San Antonio housing

As I drive around San Antonio, especially the far NorthWest (along I-10) and the West (along U.S.90) one would not know there is a housing slump. The amount of building going on is amazing. Perhaps San Antonio is not suffering as much as the rest of the U.S. However as I say this, I think of the utility infrastructure, especially water. The San Antonio and hill country have been in an almost severe drought condition for a number of years and while that may pass, the increasing number of units will forever change the amount of water needed.  The water authorities don't seem to have any concrete answers either.