Name Sites Samples
Chowan County 2 1
Citrus County 13 96
Clark County 1 2
Clark County 5 10
Clark County 4 22
Clarke County 8 16
Clarke County 1 1
Clay County 1 3
Clay County 1 3
Clay County 10 41
Clay County 1 2
Clay County 1 1
Clay County 6 28
Clay County 2 8
Clay County 3 8
Cleveland County 2 8
Clinton County 1 3
Clinton County 1 2
Cloud County 1 1
Coal County 1 11
Cocke County 1 2
Coffee County 7 23
Coffee County 13 86
Coke County 3 4
Coleman County 2 8
Colfax County 1 2
Colleton County 1 0
Collier County 50 266
Colombia 1 2
Columbia County 2 18