Groundwater Classifications

Florida's groundwaters are classified as follows:

Class G-I: Potable groundwaters in single source aquifers that have a total dissolved solids content less than 3,000 mg/L

Class G-II: Potable groundwaters in single source aquifers that have a total dissolved solids content less than 10,000 mg/L

Class G-III: Nonpotable groundwaters in unconfined aquifers that have a total dissolved solids content of 10,000 mg/L or greater, or with a content of 3,00010,000 mg/L that have been reclassified as having no potential as a future drinking water source, or have been designated as an exempt aquifer Class G-IV: Nonpotable groundwaters in confined aquifers that have a total dissolved solids content of 10,000 mg/L or greater

Other areas usually classify potable and nonpotable groundwaters in some manner.

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