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Region
- Florida3
- HawaiiLihue Region2
- High Plains Aquifer2
- AlabamaMarengo County1
- AlaskaFort Wainwright1
- Eutaw Aquifer1
- Florida, centralOrlando Region1
- FloridaCollier County1
- FloridaHendry County1
- FloridaOrlando Region1
- Floridan Aquifer1
- Great Plains1
- Gulf Coast (U.S.)1
- High Plains (U.S.)1
- Idaho1
- IdahoIdaho National Laboratory Region1
- IdahoOwyhee County1
- Kansas1
- Magothy Aquifer1
- Memphis Aquifer1