Answer:
Water in this area may have been leftover from ancient times when saline seas occupied the western U.S., and, also, as rainfall infiltrates downward into the ground, it can encounter rocks that contain highly soluble minerals, which turn the water saline.
Yes..
Having a positive family environment could support good mental and emotional health, which in turn could lead to better physical health. Strong family relationships marked by open communication, honesty, humour, and reassurance could strengthen your mental and emotional well-being.
Based on maps I looked on, it seems that San Antonio, Texas, is the closest.