Patrick AFB is one of, if not the hottest spot in the nation for PFCs groundwater contamination, from heavy use of the fire fighting foam made by DuPont. I'm sure there's no shortage of petroleum/jet fuel spills, engine oil and other toxic waste dumping at the base too. Add to the mix unregulated septic tanks, leaking sewage pipes, and a population full of pharmaceuticals and who knows what else. I wouldn't touch water from a surficial well within a few miles of that area. The deep artesian wells should be isolated, assuming the casings intact all the way through the confining layers. Not sure how long those old well casings last, also possible that some artesian wells were installed with open shallow intervals.