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Region
- Minnesota2
- New JerseyGloucester County2
- Bear Creek (Tenn. and Ky.)1
- FloridaPinellas County1
- IdahoSnake River Plain Aquifer1
- Magothy Aquifer1
- MinnesotaKeewatin Region1
- MissouriHenry County1
- New Jersey1
- New JerseySalem County1
- OhioFranklin County1
- OhioScioto River1
- PennsylvaniaLehigh County1
- Snake River Plain (Idaho and Or.)1
- TennesseeOak Ridge Region1
- Utah1