Table 1 Statistical summary of water quality (N = 608).

pH

7.3

0.3

5.6

7.3

8.7

EC [μS cm⁻¹]

78.9

41

29

67.3

427

NO₃-N [mg L⁻¹]

0.76

0.56

0.07

0.59

3.31

F [mg L⁻¹]

0.058

0.087

0.006

0.047

1.66

Cl [mg L⁻¹]

4.29

1.83

1.9

3.8

14.3

SO₄-S [mg L⁻¹]

2.33

3.11

0.4

1.4

48.4

HCO₃ [mg L⁻¹]

30.4

17.1

5

26

129

K [mg L⁻¹]

0.73

0.35

0.11

0.64

2.32

Na [mg L⁻¹]

5.89

2.77

2.12

5.42

41.22

Ca [mg L⁻¹]

7.11

5.72

1.66

5.54

47.75

Mg [mg L⁻¹]

2.00

1.52

0.38

1.51

18.92

Si [mg L⁻¹]

9.75

2.58

3.87

9.61

18.99

Sr [mg L⁻¹]

0.04

0.02

0.01

0.04

0.23

Ionic balance [%]

−1.51

1.27

−4.83

−1.59

3.65