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Region
- ArizonaSalt River Valley (Gila County and Maricopa County)2
- New JerseyRancocas Creek Watershed2
- New York (State)Cattaraugus County2
- American SamoaTutuila Island1
- ArizonaMaricopa County1
- ArizonaTucson Aqueduct1
- FloridaHillsborough County1
- Indiana1
- KentuckyJefferson County1
- LouisianaVernon Parish1
- Minnesota1
- MinnesotaMinneapolis Region1
- MinnesotaMount Simon-Hinckley Aquifer1
- Mount Simon-Hinckley Aquifer (Minn.)1
- Naval Air Station Memphis (Tenn.)1
- Naval Ordnance Station Louisville (Ky.)1
- NevadaHumboldt River Watershed1
- New York (State)Croton-on-Hudson Region1
- New York (State)Ossining Region1
- New York (State)Westchester County1