When used in this chapter:

1. (1) “Aquifer storage and recovery” means a well system operated for the purpose of injecting and storing water in an aquifer for direct retrieval and use.
2. (2) “Artificial recharge” means the practice of introducing water into an aquifer through a horizontal or vertical well that increases the availability of water for consumptive or non-consumptive uses (e.g., a hydraulic barrier against saltwater intrusion, aquifer recharge systems, aquifer storage and recovery systems or heat exchange systems).
3. (3) “Heat exchange” means a well or combination of wells that remove groundwater associated with cooling or heating systems where the water withdrawn is returned to an aquifer.
4. (4) “Storage horizon” or “injection horizon” means the geological underground formation, group of formations, or part of a formation that receives or stores the injected water.

5. (5) “Underground Source of Drinking Water” or “USDW” means an aquifer or a portion of an aquifer that:

   1. (a) Supplies drinking water for human consumption; is classified by Rule 62-520.410, F.A.C., as Class G-I or G-II ground waters; or, contains a total dissolved solids concentration of less than 10,000 mg/L; and
   2. (b) Is not an “exempted aquifer,” pursuant to Chapter 62-528, F.A.C.

Rulemaking Authority 373.044, 373.113 FS. Law Implemented 373.106 FS. History–New 9-3-81, Formerly 16K-1.05(2), (9), Amended 8-14-03.