Parameter/Site

Control

Discharge point

S.P 2

S.P 3

EMA^*

WHO^*

BOD (mg/L)

32.4 ± 6.67

42.1 ± 3.12

38.9 ± 6.19

22.3 ± 5.56

30

30

COD (mg/L)

50.1 ± 10.37

310.8 ± 33.29

167.8 ± 73.13

96.3 ± 15.37

60

60

Oil &grease (mg/L)

0.9 ± 0.13

6.5 ± 0.48

4.1 ± 0.62

2.5 ± 0.97

2.5

2.5

pH

6.8 ± 0.58

7.0 ± 0.23

6.9 ± 0.07

6.9 ± 0.13

6 - 9

6.5 - 9

TSS mg/L

22.8 ± 10.90

171.3 ± 79.32

74.8 ± 18.08

36.0 ± 17.70

25

25

Iron mg/L

0.4 ± 0.22

3.3 ± 2.12

1.5 ± 1.14

0.6 ± 0.25

1

1

Phosphates (mg/L)

0.2 ± 0.04

0.8 ± 0.27

0.5 ± 0.16

0.3 ± 0.10

0.5

0.5

DO mg/L

8.9 ± 1.42

9.6 ± 4.69

9.5 ± 1.58

8.55 ± 1.4

5.0

5.0

Conductivity (µS/cm)

124.8 ± 62.66

231.5 ± 89.27

179.5 ± 81.52

134.3 ± 69.03

1000

1000