Organic pollution parameters

Sampling point

Standard

Parameters

Unit

P1

P2

P3

P4

Nitrates, ${\text{NO}}_3^{-}$

mg/L

0.286

1.002

1.360

1.217

0 - 50

Dissolved oxygen

%

72.3

64.8

63.9

64

mg/L

5.87

5.01

4.91

4.93

BOD5

mg/L, O₂ dissolved

35

40

110

20

COD

mg/L, O₂ dissolved

124

373

296

334

COD/BOD5

3.543

9.325

2.691

16.700

MO

mg/L

64

151

172

124.67