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

Table 2 Fecal indicator bacteria estimates at marine beaches

Indicator	N¹	Min.	Max.	Geometric Mean	Non-detects
Edgewater Beach
Enterococcus CFU	377	0.1	920	7.2	48
Enterococcus CCE_ΔΔ	378	69	10000	380	0
Enterococcus CCE_Δ	378	54	3600	150	0
Bacteroidales CCE_ΔΔ	378	120	430000	3000	4
Bacteroidales CCE_Δ	378	47	300000	1300	4
Fairhope Beach
Enterococcus CFU	431	0.1	3000	21	36
Enterococcus CCE_ΔΔ	438	19	99000	260	97
Enterococcus CCE_Δ	438	26	29000	130	97
Bacteroidales CCE_ΔΔ	432	8.5	200000	1800	28
Bacteroidales CCE_Δ	432	10	140000	980	28
Clostridia CCE_ΔΔ	438	79	20000	1200	1
Clostridium CCE_Δ	438	44	7900	650	1
Fecal Bacteroides CCE_ΔΔ	408	16	37000	450	85
Fecal Bacteroides CCE_Δ	408	9.8	25000	210	85
Goddard Beach
Enterococcus CFU	426	0.1	960	3.6	78
Enterococcus CCE_ΔΔ	425	14	26000	160	28
Enterococcus CCE_Δ	425	13	12000	120	28
Bacteroidales CCE_ΔΔ	426	18	120000	1100	32
Bacteroidales CCE_Δ	426	23	65000	900	32
Clostridia CCE_ΔΔ	420	9.6	52000	890	0
Clostridium CCE_Δ	420	29	17000	500	0
Fecal Bacteroides CCE_ΔΔ	426	11	140000	530	99
Fecal Bacteroides CCE_Δ	426	11	66000	410	99

1: Number of samples
CCE = qPCR Calibrator Cell Equivalents per 100 ml for the delta CCE_Δ and delta-delta CCE_ΔΔ CT calculations CFU = Colony Forming Units per 100 ml (EPA Method 1600)

ISSN: 1476-069X