Table 1 Physicochemical parameters and antibiotic concentrations of water samples.

From: Bogotá River anthropogenic contamination alters microbial communities and promotes spread of antibiotic resistance genes

Samplea

Physicochemical parameterb

Antibiotic concentration (µg/L)c

BOD (mgO2/L)

COD (mgO2/L)

TSS (mg/L)

TN (%)

MNZ

SMX

TMP

NOR

CIP

CLI

CLR

ERY

AZM

RS15

<21.3

19

0.25

5.2

ND

0.02

ND

2.03

0.57

ND

ND

0.01

ND

RM15

57

96

28

13

0.18

0.17

0.05

2.03

0.54

0.02

0.47

0.01

0.56

RL15

247.1

433

100

12

0.33

1.40

0.29

2.12

0.68

0.01

0.93

0.05

0.99

HA15-1

286

525

131

69

0.36

0.06

0.04

2.43

0.70

0.69

ND

0.01

ND

HA15-2

483

895

109

41

0.36

14.56

7.10

63.22

0.86

0.60

ND

0.03

0.50

HA15-3d

243

505

90

52

         

HB15-1

<21.3

33

136

32

0.97

3.73

11.20

10.92

2.06

7.22

1.59

0.05

1.47

HB15-2

199

368

103

59

9.00

2.17

1.51

3.47

9.98

0.31

0.73

0.03

0.82

HB15-3d

322

577

81

52

         

HC15-1

444

847

81

56

9.08

9.20

1.63

6.01

3.06

4.23

17.53

ND

10.57

HC15-2

243

528

63

68

7.61

3.66

0.94

3.83

8.59

4.87

1.71

ND

1.62

HC15-3d

470

729

124

35

         
  1. aSamples collected in 2015 from the Bogotá River source (RS), middle section (RM) or lower section (RL), and from hospitals (HA, HB, HC; 3 samples each).
  2. bBOD, biological oxygen demand; COD, chemical oxygen demand; TSS, total suspended solids; TN, total nitrogen.
  3. cMNZ, metronidazole; SMX, sulfamethoxazole; TMP, trimethoprim; NOR, norfloxacin; CIP, ciprofloxacin; CLI, clindamycin; CLR, clarithromycin; ERY, erythromycin; AZM, azithromycin; ND, not detected.
  4. dSamples HA15-3, HB15-3, HC15-3 were not analyzed for antibiotics.
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