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Table 2 Fecal indicator bacteria estimates at marine beaches

From: Rapidly measured indicators of recreational water quality and swimming-associated illness at marine beaches: a prospective cohort study

Indicator N1 Min. Max. Geometric Mean Non-detects
Edgewater Beach
Enterococcus CFU 377 0.1 920 7.2 48
Enterococcus CCEΔΔ 378 69 10000 380 0
Enterococcus CCEΔ 378 54 3600 150 0
Bacteroidales CCEΔΔ 378 120 430000 3000 4
Bacteroidales CCEΔ 378 47 300000 1300 4
Fairhope Beach
Enterococcus CFU 431 0.1 3000 21 36
Enterococcus CCEΔΔ 438 19 99000 260 97
Enterococcus CCEΔ 438 26 29000 130 97
Bacteroidales CCEΔΔ 432 8.5 200000 1800 28
Bacteroidales CCEΔ 432 10 140000 980 28
Clostridia CCEΔΔ 438 79 20000 1200 1
Clostridium CCEΔ 438 44 7900 650 1
Fecal Bacteroides CCEΔΔ 408 16 37000 450 85
Fecal Bacteroides CCEΔ 408 9.8 25000 210 85
Goddard Beach
Enterococcus CFU 426 0.1 960 3.6 78
Enterococcus CCEΔΔ 425 14 26000 160 28
Enterococcus CCEΔ 425 13 12000 120 28
Bacteroidales CCEΔΔ 426 18 120000 1100 32
Bacteroidales CCEΔ 426 23 65000 900 32
Clostridia CCEΔΔ 420 9.6 52000 890 0
Clostridium CCEΔ 420 29 17000 500 0
Fecal Bacteroides CCEΔΔ 426 11 140000 530 99
Fecal Bacteroides CCEΔ 426 11 66000 410 99
  1. 1: Number of samples
  2. CCE = qPCR Calibrator Cell Equivalents per 100 ml for the delta CCEΔ and delta-delta CCEΔΔ CT calculations CFU = Colony Forming Units per 100 ml (EPA Method 1600)