FLORIDA GEOLOGICAL SURVEY


mineral content of water from deep wells in the sand-and-gravel aquifer.
 Except for a few areas, the sum of mineral constituents in the water
of this aquifer is very low (12-36 ppm) throughout the two counties.
Figure 41 shows the type of ground water based on the major constitu-
ents in solution, regardless of total concentration. All elements are di-
vided roughly into two groups, metal and non-metals. In solution the
metals calcium, magnesium, sodium, and potassium are positively
charged cationss) and the non-metals carbonate, sulfate, chloride, fluo-


Figure 41. Map showing types of water from wells in the sand-and-gravel aquifer.