Parameter and Unit

Jan-March

April-June

July-Sept

Oct-Dec

WHO Standard

pH

7.37 ± 0.21

7.21 ± 0.09

7.30 ± 0.19

7.34 ± 0.12

6.5 - 8.5

Turbidity NTU

64.49 ± 14.45

332.22 ± 143.27

425.66 ± 119.31

237.00 ± 203.64

5

Temperature ˚C

25.57 ± 0.15

25.50 ± 0.26

25.17 ± 0.46

25.40 ± 0.20

30

Conductivity ms/cm

312.15 ± 42.92

363.41 ± 31.91

331.33 ± 17.62

315.77 ± 51.69

1000

Total Dissolve Solids mg/L

218.51 ± 30.05

254.39 ± 22.34

231.93 ± 12.33

221.04 ± 36.18

1000

Ammonia (NH₃₎ mg/L

0.92 ± 0.26

1.09 ± 0.66

1.92 ± 0.24

1.06 ± 0.19

0.5 (EU)

Nitrite ( ${\text{NO}}_2^{-}$ ) mg/L

0.94 ± 0.23

0.66 ± 0.27

0.48 ± 0.17

0.53 ± 0.02

3

Nitrate (NO₃) mg/L

17.98 ± 0.41

17.35 ± 3.85

22.58 ± 1.17

20.22 ± 0.69

50

Chloride mg/L

20.73 ± 4.82

22.67 ± 4.73

31.33 ± 26.58

22.10 ± 2.71

250

Total Alkalinity mg/L

55.33 ± 6.43

58.33 ± 1.15

63.00 ± 1.00

63.33 ± 4.51

200

Total Hardness mg/L

89.00 ± 5.57

78.33 ± 3.06

80.33 ± 8.39

75.33 ± 2.08

500

Calcium Hardness mg/L

64.33 ± 7.64

55.33 ± 5.86

58.67 ± 1.53

55.67 ± 6.51

200

Magnesium Hardness mg/L

24.67 ± 7.02

23.00 ± 8.66

21.67 ± 7.37

19.67 ± 6.43

150

Calcium mg/L

25.73 ± 3.05

22.13 ± 2.34

23.47 ± 0.61

22.27 ± 2.60

200

Magnesium mg/L

7.46 ± 0.89

6.42 ± 0.68

6.81 ± 0.18

6.46 ± 0.75

150

Arsenic mg/L

0.00 ± 0.00

0.00 ± 0.00

0.00 ± 0.00

0.00 ± 0.00

0.01

Copper mg/L

0.55 ± 0.31

1.57 ± 1.31

1.74 ± 0.57

1.19 ± 0.12

0.2

Lead mg/L

0.00 ± 0.00

0.01 ± 0.01

0.00 ± 0.00

0.00 ± 0.00

0.01

Iron (Total) mg/L

1.19 ± 0.08

1.52 ± 0.21

2.06 ± 0.52

1.96 ± 0.47

0.3

Zinc mg/L

0.12 ± 0.08

0.17 ± 0.04

0.76 ± 0.97

1.61 ± 0.47

5 (USA)

Fluoride mg/L

0.59 ± 0.12

1.07 ± 0.47

1.50 ± 0.26

0.64 ± 0.28

1.5

Sulphate mg/L

23.00 ± 2.00

22.90 ± 4.74

20.07 ± 1.01

21.67 ± 2.37

250

Phosphate mg/L

20.45 ± 3.20

24.20 ± 2.52

25.84 ± 3.61

18.36 ± 1.15

5

Aluminium mg/L

1.26 ± 0.94

0.45 ± 0.26

0.54 ± 0.10

0.52 ± 0.10

0.2 (EU)

Manganese mg/L

0.56 ± 0.40

0.41 ± 0.25

0.38 ± 0.22

0.37 ± 0.08

0.4