Region
Illinois
13
Pennsylvania
13
Bucks County
7
Tennessee
5
Belvidere
4
Minnesota
4
Chester County
3
Maine
3
New Jersey
3
New York (State)
3
Alamosa River (Colo.)
2
Bay County
2
Calumet Region (Ill. and Ind.)
2
Colorado
2
Conejos County
2
Connecticut
2
Cumberland Mountains
2
Five-O, Lake, Region
2
Florida
2
Indiana
2
Ocean County
2
Rock River Region (Wis. and Ill.)
2
Terrace Reservoir (Colo.)
2
Waterbury
2
Winnebago County
2
Wisconsin
2
Wolcott (Town)
2
Antioch
1
Antioch Region
1
Byron Region
1
Cayuga County
1
Cortland County
1
Dayton Region
1
De Pere
1
Delaware Basin (Tex. and N.M.)
1
Elkhart County
1
Fair Lawn
1
Genesee County
1
Gray Region
1
Lansdale
1
Luzerne County
1
Meddybemps
1
Meddybemps Region
1
Mercer County
1
Minneapolis Region
1
Montgomery County
1
Mount Simon-Hinckley Aquifer
1
Mount Simon-Hinckley Aquifer (Minn.)
1
Ohio
1
Onondaga County
1
more ...