Year

Total

Industrial pollution

Domestic use

COD in wastewater emissions

Ammonia residues

Industrial COD

Industrial ammonia

2002

43,950

20,720

23,230

13.66

1.28

5.84

0.421

2003

46,000

21,240

24,760

13.33

1.29

5.12

0.404

2004

48,240

22,110

26,130

13.39

1.33

5.09

0.422

2005

52,450

24,310

28,140

14.14

1.49

5.54

0.525

2006

53,680

24,020

29,660

14.28

1.41

5.41

0.425

2007

55,680

24,660

31,020

13.81

1.32

5.11

0.341

2008

57,170

24,170

33,000

13.20

1.27

4.57

0.297

2009

58,970

23,450

35,520

12.78

1.22

4.40

0.273

2010

61,730

23,750

37,980

12.38

1.23

4.34

0.273

2011

65,920

23,090

42,790

24.99

2.60

3.54

0.281

2012

68,480

22,160

46,270

24.23

2.53

3.38

0.264

2013

69,544

20,984

48,511

23.53

2.46

3.19

0.246

2014

71,620

20,530

51,030

22.94

2.32

3.11

0.232