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Table 2 A statistical summary of measured parameters of lake and MWW samples

From: Aqueous chemistry of anthropogenically contaminated Bengaluru lakes

Parameter

Mixed wastewater samples

Lake samples

Average values (mg L− 1) of Bengaluru city groundwater samples [36]

Average values (mg L− 1) of IISc groundwater samples [37]

 

Minimum

Median

Maximum

Minimum

Median

Maximum

pH

7.15

7.18

7.9

6.0

8.8

10.3

HCO3 (mg L− 1)

109

305

551

80

109

344

341

165

Cl (mg L− 1)

95

100

102

36

66

102

181

50

SO42− (mg L−1)

6

10

20

7

40

319

88

12

NO3 (mg L− 1)

0.5

0.7

2.5

0.0

3.5

9.0

53.0

Ca2+ (mg L−1)

46

53

78

17

25

90

117

38

Mg2+ (mg L−1)

20

20

24

7

14

40

53

15

Na+ (mg L−1)

73

87

95

20

57

92

97

39

K+ (mg L−1)

17

19

20

8

13

16

6

NH4+ (mg L−1)

16

29

50

0.0

0.0

4

TDS (mg L−1)

591

683

811

173

359

882

770

234

COD (mg L−1)

54

83

99

12

42

67

DO (mg L−1)

0.1

0.4

0.5

4.1

7.5

15.0

Chl-a (μg L−1)

BDL

4

19

  1. BDL Below detection limit