Standard A and Standard B of Malaysian Industrial Effluent Regulation
Updated: Jun 28, 2022
What is the Malaysian Industrial Effluent Regulation?
Industrial Effluent Regulation 2009 outlines the regulations that apply to any premises which discharge or release industrial effluent or mixed effluent onto or into any soil, or into any inland waters in Malaysia.
Visit our article on Industrial Effluent Regulation 2009 to learn more
What is Standard A & Standard B?
Standard A is applicable to discharge into any water within any catchment areas, and standard B is applicable to discharge into any other inland waters or Malaysian waters.
If your facility is nearby a river, you will most likely have to adhere to Standard B. If your facility is far from a river, you will most likely have to adhere to Standard A.
For Negeri Sembilan, all industrial effluent must adhere to Standard B regardless of location.
You can identify if your location follows standard A or B by looking at the table in the Environmental Quality Industrial Effluent Regulation 2009 document.
Download the full document of Industrial Effluent Regulation 2009 here:
You can also contact the Department of Environment to get further explanation.
Industrial Effluent Regulation 2009 Limits
The limits are as below:
Standard A
No | Parameter | Limit |
1 | Temperature | 40 °C |
2 | pH Value | 6.0-9.0 |
3 | BOD 5 at 20°C | 20 mg/L |
4 | COD | *see section below |
5 | Suspended Solids | 50 mg/L |
6 | Mercury | 0.005 mg/L |
7 | Cadmium | 0.01 mg/L |
8 | Chromium, Hexavalent | 0.05 mg/L |
9 | Chromium, Trivalent | 0.20 mg/L |
10 | Arsenic | 0.01 mg/L |
11 | Cyanide | 0.05 mg/L |
12 | Lead | 0.10 mg/L |
13 | Copper | 0.20 mg/L |
14 | Manganese | 0.20 mg/L |
15 | Nickel | 0.20 mg/L |
16 | Tin | 0.20 mg/L |
17 | Zinc | 2.0 mg/L |
18 | Boron | 1.0 mg/L |
19 | Iron (Fe) | 1.0 mg/L |
20 | Silver | 0.1 mg/L |
21 | Aluminium | 10 mg/L |
22 | Selenium | 0.02 mg/L |
23 | Barium | 1.0 mg/L |
24 | Fluride | 2.0 mg/L |
25 | Formaldehyde | 1.0 mg/L |
26 | Phenol | 0.001 mg/L |
27 | Free Chlorine | 1.0 mg/L |
28 | Sulphide | 0.50 mg/L |
29 | Oil and Grease | 1.0 mg/L |
30 | Ammoniacal Nitrogen | 10 mg/L |
31 | Colour | 100 ADMI |
Standard B
No | Paramater | Limit |
1 | Temperature | 40°C |
2 | pH Value | 5.5-9.0 |
3 | BOD 5 at 20 °C | 50 mg/L |
4 | COD | *See section below |
5 | Suspended Solids | 100 mg/L |
6 | ​Mercury | 0.05 mg/L |
7 | Cadmium | 0.02 mg/L |
8 | Chromium, Hexavalent | 0.05 mg/L |
9 | Chromium, Trivalent | 1.0 mg/L |
10 | Arsenic | 0.1 mg/L |
11 | Cyanide | 0.1 mg/L |
12 | Lead | 0.5 mg/L |
13 | Copper | 1.0 mg/L |
14 | Manganese | 1.0 mg/L |
15 | Nickel | 1.0 mg/L |
16 | Tin | 1.0 mg/L |
17 | Zinc | 2.0 mg/L |
18 | Boron | 4.0 mg/L |
19 | Iron (Fe) | 5.0 mg/L |
20 | Silver | 1.0 mg/L |
21 | Aluminium | 15.0 mg/L |
22 | Selenium | 0.5 mg/L |
23 | Barium | 2.0 mg/L |
24 | Fluoride | 5.0 mg/L |
25 | Formaldehyde | 2.0 mg/L |
26 | Phenol | 1.0 mg/L |
27 | Free Chlorine | 2.0 mg/L |
28 | Sulphide | 0.50 mg/L |
29 | Oil and Grease | 10 mg/L |
30 | Ammoniacal Nitrogen | 20 mg/L |
31 | Colour | 200 ADMI |
Chemical Oxygen Demand (COD) Limits
COD limits are determined according to industry.
Trade/Industry | Standard A (mg/L) | Standard B (mg/L) |
Pulp Mill | 80 | 350 |
Paper Mill (recycled) | 80 | 250 |
Pulp and Paper Mill | 80 | 300 |
Textile Industry | 80 | 250 |
Fermentation and Distillery | 400 | 400 |
Other Industries | 80 | 200 |
Feel free to contact us if you have any questions regarding monitoring of discharge of industrial effluent.