UDC614.7
(083.75)
GB 3838-88
Replacing:
GB 3838-83

The National Standards of the People's Republic of China

Environmental Quality Standards for Surface Water

 

　

This standard is hereby formulated for implementing the Environmental Protection Law and Law of Water Pollution Prevention and Control of People¨s Republic of China, and to control water pollution and to protect water resources.

This standard is applicable to the surface water bodies of rivers, lakes and reservoirs within the territory of the People¨s Republic of China.

　

1.The classification of water bodies by functions

The water bodies are divided into five classes according to the utilization purposes and protection objectives:

ClassI is mainly applicable to the water from sources, and the national nature reserves.

Class II is mainly applicable to first class of protected areas for centralized sources of drinking water, the protected areas for rare fishes, and the spawning fields of fishes and shrimps.

Class III is mainly applicable to second class of protected areas for centralized sources of drinking water, protected areas for the common fishes and swimming areas.

Class IV is mainly applicable to the water areas for industrial use and entertainment which is not directly touched by human bodies.

ClassV is mainly applicable to the water bodies for agricultural use and landscape requirement.

　

The water bodies with various functions are classified based on the highest function, and those with seasonal functions may be classified by seasons.

　

Table. The Environmental Quality Standards for Surface Water mg/L

No.

Parameters/standards¨ value/classification

I.

II.

III.

IV.

V.
　

　

　

　

　

Fundamental requirements

All the water bodies should not contain the following substances resulted by non-natural reasons.

  1. substances that can precipitate and become disgusting sediments;

  2. floating matter, such as fragment, floating slag, oil and other matter that leads to unpleasant perception;

  3. substances that produce disgusting color, smell and turbidity;

  4. substances that are harmful, toxic to or has negative physical effects on human beings, animals and plants;

  5. substances that benefits the disgusting aquatic organism.

1

　

Water temperature

≧

The water temperature variations caused by human activities should be controlled within:

The maximum average weekly temperature rise in summer1;

The maximum average weekly temperature drop 2;

2

PH

6.5~8.5

6~9

3

Sulfate*

(by )

Lower than 250

250

250

250

250

4

Chloride*

(by )

Lower than 250

250

250

250

250

5

Soluble Fe*

Lower than 0.3

0.3

0.5

0.5

1.0

6

Total Manganese* (Mn)

Lower than 0.1

0.1

0.1

0.5

1.0

7

Total Copper*

Lower than 0.01

1.0

(fishery 0.01)

1.0

(fishery 0.01)

1.0

1.0

8

Total Zine*

0.05

1.0

(fishery0.1)

1.0(fishery 0.1)

2.0

2.0

9

Nitrate (by N)

Lower than 10

10

20

20

25

10

Nitrite (by N)

0.06

0.1

0.15

1.0

1.0

11

Non-ionic Nitrogen

0.02

0.02

0.02

0.2

0.2

12

Kjeldahl Nitrogen

0.5

0.5

1

2

2

13

Total Phosphorus

(by P)

0.02

0.1(lakes,reservoirs
0.025)

0.1(lakes,reservoirs
0.05)

0.2

0.2

14

Permanganate Index

2

4

6

8

10

15

Soluble Oxygen

Percentage of saturation 90%

6

5

3

2

16

Chemical Oxygen Demand ()

Lower than

15

Lower than

15

15

20

25

17

Biochemical Oxygen Demand

(BOD5)

Lower than

3

3

4

6

10

18

Fluoride ()

Lower than

1.0

1.0

1.0

1.5

1.5

19

Selenium (four)

Lower than

0.01

0.01

0.01

0.02

0.02

20

Total Arsenic

0.05

0.05

0.05

0.1

0.1

21

Total Mercury**

0.00005

0.00005

0.0001

0.001

0.001

22

Total Cadmium***

0.001

0.005

0.005

0.005

0.01

23

Total Chromium (six)

0.01

0.05

0.05

0.05

0.1

24

Total Lead**

0.01

0.05

0.05

0.05

0.1

25

Total Cyanide

0.005

0.05(fishery 0.005)

0.2(fishery 0.005)

0.2

0.2

26

Volatile Phenol**

0.002

0.002

0.005

0.01

0.1

27

Oil Category **

0.05

0.05

0.05

0.5

1.0

28

Anionic Surface-active Agent

Lower than

0.2

0.2

0.2

0.3

0.3

29

Total Coliform Group Bacteria ***(/L)

　 　

1000

 　 　

30

Benzo(a)pyrene ***(ug/L)

0.0025

0.0025

0.0025

 　 　

　

* The items permitted to be appropriately adjusted according to the background characteristic of the local water body.

** The lowest measurement values in the stipulated analysis and measurement methods, which can not meet the fundamental requirements.

*** Tentative standards.