Table 1. Number of E. coli, total and antibiotic resistant coliforms.

					No. of E. coli strains (MPN/100ml)				Bacterial count on L-TTC +/- antibiotics (CFU/mL)
Site	Point of sampling	Geographic coordinates	Land use around sampling point	Nb of sampling	Mean Number	Min—max	L-TTC		L-TTC + AMP		L-TTC + CAZ		L-TTC + CIP
							Mean number	Min—max	Mean number (%)	Min—max	Mean number (%)	Min—max	Mean number	Min—max
1	WWTP Influent	16°20'02"N 61°42'04"W		6	2.38 x 107	6.01 x 105–8.20 x 107	6.80 x 108	2.52 x 107–2.38 x 109	3.4 x 108 (50.00)	1.50 x 107–1.20 x 109	1.22 x 108 (17.9)	3.65 x 106–4.32 x 108	1.10 x 107 (1.6)	3.98 x 105–3.90 x 107
	WWTP Effluent			6	7.62 x 105	4.01 x 104–2.17 x 106	9.00 x 107	4.15 x 106–3.26 x 108	4.8 x 107 (53.3)	4.25 x 106–1.68 x 108	2.10 x 107 (23.3)	8.30 x 105 -7.07 x 107	1.00 x 106 (1.1)	3.80 x 104–3.70 x 106
	Point 1	16°17'29''N 61°43'44"W	Broad-leaved forest	2	0	0.00	3.61 x 104	1.27 x 104–5.95 x 104	9.20 x 103 (25.5)	5.60 x 103–1.28 x 104	3.45 x 102 (1.1)	1.10 x 102–3.90 x 102	40.00 (0.1)	20.00–60.00
	Point 2	16°18'16"N 61°43'23"W		2	7.50	0.00–15	1.07 x 104	6.50 x 103–1.4 9x 104	5.00 x 103 (46.7)	2.42 x 103–7.58 x 103	1.00 x 103 (9.3)	0–2.00 x 103	0.00 (0.0)	0.00
	Point 3	16°18'55"N 61°43'17"W		2	63.50	0.00 -127	2.60 x 104	2.00 x 104–3.20 x 104	1.84 x 104 (70.8)	1.22 x 104–1.84 x 104	2.10 x 103 (8.2)	1.10 x 103–3.10 x 103	0.00 (0.0)	0.00
	Point 4	16°19'38"N 61°42'11"W	Urban area/Crops	2	2.42 x 102	1.60 x 102–3.24 x 102	4.40 x 104	8.00 x 103–8.00 x 104	3.08 x 104 (70.00)	2.70 x 104–3.84 x 104	2.30 x 103 (5.4)	5.00 x 102–4.10 x 103	40.00 (0.09)	0–80
	Point 5	16°19'47"N 61°42'14"W		2	9.08 x 103	8.32 x 103–9.83 x 103	1.40 x 105	8.00 x 104 -2.00 x 105	3.92 x 104 (35.7)	3.84 x 104–4.00 x 104	3.10 x 104 (22.2)	2.90 x 104–3.30 x 104	2.20 x 103 (1.6)	1.50 x 103–3.00 x 103
	Point 6	16°19'54''N 61°42'14''W		6	2.30 x 105	2.45 x 104–3.99 x 105	8.50 x 105	2.25 x 104–2.30 x 106	7.10 x 105 (83.7)	4.00 x 105–1.60 x 106	3.98 x 105 (46.00)	5.90 x 104–1.31 x 106	1.38 x 105 (16.1)	1.6 x 104–2.00 x 105
	Point 7	16°20'07''N 61°42'15''W	Discharge	6	9.26 x 105	8.55 x 104–4.01 x 106	2.70 x 106	3.10 x 105–1.70 x 107	2.28 x 106 (84.4)	3.60 x 105–4.00 x 106	6.40 x 105 (23.6)	1.60 x 105–1.37 x 106	3.82 x 105(14.0)	2.00 x 104–8.00 x 105
	Point 8	16°20'06"N 61°42'03"W	Mangrove	6	8.68 x 103	1.35 x 103–4.09 x 104	2.85 x 105	5.70 x 104–1.70 x 106	2.70 x 105 (94.7)	1.00 x 103–3.80 x 105	2.25 x 105 (78.9)	1.60 x 104–6.20 x 105	2.40 x 104 (8.4)	9.30 x 103–5.30 x 104
	Point 9	16°20'15"N 61°42'02"W	Open sea	6	1.88 x 103	0–6.39 x 103	5.75 x 104	1.30 x 104–2.70 x 105	2.60 x 104 (45.2)	4.00 x 102–4.00 x 104	2.60 x 103 (4.5)	1.00 x 102–5.50 x 103	4.50 x 102 (0.8)	0.00–1.3 x 103
2	WWTP Influent	16°14'15"N 61°33'49"W		3	1.21 x 107	8.93 x 106–1.76 x 107	4.00 x 108	2.03 x 108–7.41 x 108	2.30 x 108 (57.5)	1.52 x 108 _ 3.85 x 108	6.2 x 107 (15.5)	3.80 x 107–1.02 x 108	7.70 x 106 (1.9)	3.75 x 106–1.50 x 107
	WWTP Effluent			3	3.93 x 105	1.34 x 105–8.42 x 105	5.80 x 107	3.58 x 107–8.54 x 107	2.30 x 107 (39.6)	1.52 x 107–3.49 x 107	5.2 x 105 (9.00)	4.32 x 105 _ 6.16 x 105	4.00 x 105 (0.7)	2.35 x 105–5.28 x 105
	Point 1	16°13'39"N 61°33'43" W	Discharge	6	14.1	<15–30	7.00 x 102	3.00 x 102–9.00 x 102	5.00 x 102 (71.4)	20.00–2.00 x 103	62.00 (8.8)	20.00–1.00 x 102	1.00 x 102 (14.3)	0.00–6.70 x 102
	Point 2	16°14'07"N 61°34'00"W	Broad-leaved forest	6	10	<15	7.30 x103	3.00 x 102–4.12 x 104	3.01 x 103 (42.4)	60.00–1.00 x 104	2.1 x 103 (28.8)	2.5 x 102–1.3 x 104	2.20 x 102 (3.00)	0.00–5.20 x 102
3	Point 1	16°16'51"N 61°33'10"W	Mangrove	6	67	<15–3.47 x 102	1.10 x 103	3.00 x 102 -1.45 x 104	8.00 x 102 (72.7)	4.20 x 102–2.60 x 103	1.3 x 102 (11.8)	50.00–1.00 x 103	80.00 (7.3)	40.00–2.50 x 102
	Point 2	16°16'41"N 61°33'15"W		6	24.33	< 15–61	6.30 x 103	3.50 x 103–2.60 x 104	1.60 x 103 (25.3)	3.00 x 102–5.00 x 103	8.1 x 102 (12.8)	1.70 x 102–2.00 x 103	1.70 x 102 (2.7)	40.00–6.00 x 102
4	Point 1	16°10'27''N 61°41'45"W	Broad-leaved forest	2	0	0	8.00 x 103	6.00 x 103–10.00 x 103	4.98 x 103 (62.25)	1.00 x 103–8.96 x 103	6.2 x 102 (7.75)	1.00 x 102–9.40 x 102	0.00 (0.0)	0.00
	Point 2	16°09'53''N 61°40'15"W		2	2.40 x 102	0–4.80 x 102	2.35 x 104	9.00 x 103–4.69 x 104	1.78 x 104 (76.2)	5.60 x 103–3.00 x 104	3.5 x 103 (14.9)	1.70 x 103–5.30 x 103	0.00 (0.0)	0.00
	Point 3	16°12'16"N 61°39'13"W	Urban area/Crops	2	4.52 x 103	0–9.04 x 103	6.05 x 104	2.10 x 104–1.00 x 105	4.05 x 104 (66.9)	4.00 x 104–4.50 x 104	1.37 x 104 (22.6)	1.14 x 104–1.6 x 104	50.00 (0.16)	0.00–1.00 x 102
	Point 4	16°13'54"N 61°40'11"W		2	93.5	30–1.27 x 102	6.00 x 104	2.00 x 104–1.00 x 105	4.15 x 104 (69.2)	3.50 x 103–4.80 x 104	1.68 x 104 (28.0)	3.00 x 103–3.33 x 104	0.00 (0.0)	0.00
	Point 5	16°16'09"N 61°40'18"W		2	1.81 x 102	46–2.70	7.00 x 104	3.00 x 104–1.10 x 105	5.00 x 104 (71.4)	2.00 x 104–8.00 x 104	4.45 x 103 (15.7)	3.40 x 103–5.50 x 103	1.00 x 102 (0.14)	26.00–1.74 x 102
	Point 6	16°17'23"N 61°39'36"W		2	2.10 x 102	93–2.34 x 102	7.00 x 104	6.00 x 104–8.00 x 104	5.00 x 104 (71.4)	4.00 x 104–5.00 x 104	5.00 x 103 (7.1)	3.90 x 103–6.10 x 103	3.36 x 102 (4.8)	1.70 x 102–5.02 x 102

WWTP, waste water treatment plants; MPN, most probable number; CFU, colony-forming unit; Selective growth media: TTC Triphenyltetrazolium Chloride; AMP, ampicillin; CAZ, ceftazidime; CIP, ciprofloxacin