Surface water

Name of samples

c25˚C

Cl⁻ (mg/l)

${\text{NO}}_3^{-}$ (mg/l)

DO (mg/l)

DCO (mg/l)

DBO₅ (mg/l)

Overall quality

Ch_Av

85

6

0.64

7.8

32

14.8

poor

Ch_Am

89

5

0.76

8.03

11

5.2

good

BK

73

5

0.86

4.24

36

7.06

average

Mare

60

5.5

3.2

6.45

48

10.2

poor