Standard water quality and quantity of disposal substances for the protection of water resources, and public health, and bio-diversity conservation
Table 1: Standard water quality of public waterbody for bio-diversity conservation (Royal Government of the Kingdom of Cambodia, 2021)
No. |
Parameter |
Unit |
Standard |
||
Waterbody type I |
Waterbody type II |
Coastal water |
|||
1 |
pH |
|
6.5 – 8.5 |
6.5 – 8.5 |
7.0 – 8.3 |
2 |
Dissolved Oxygen (DO) |
mg/l |
> 3 |
>4 |
>8 |
3 |
BOD5 |
mg/l |
<8 |
<6 |
- |
4 |
CODMn |
mg/l |
<10 |
<8 |
<8 1 |
5 |
Total Suspended Solid (TSS) |
mg/l |
<100 |
<100 |
<80 |
6 |
Salinity |
mg/l |
<1000 |
<1000 |
- |
7 |
Nitrate (NO3‒ as N) |
mg/l |
<2.4 |
<1.2 |
<0.06 |
8 |
Total Nitrogen (T-N) |
mg/l |
<3 |
<2 |
<2 |
9 |
Total Phosphorus (T-P) |
mg/l |
<0.25 |
<0.15 |
<0.09 |
10 |
Oil or Grease |
mg/l |
- |
- |
<0.14 |
Note:
- Waterbody type I: refers to close waterbody type such as lake, pond, reservoir, wetland, including stream, tributary, channel, and drainage, whose having no inflow water in dry season.
- Waterbody type II: refers to open waterbody type such as river, stream, including stream, tributary, channel, and drainage, whose having inflow water in dry season.
- (-): no value
- (1): refer to chemical oxygen demand base on potassium permanganate (CODOH)
Table 2: Standard water quality of public waterbody for public health protection (Royal Government of the Kingdom of Cambodia, 2021)
No. |
Parameter |
Unit |
Standard |
1 |
Carbon tetrachloride (CCl4) |
µg/l |
<4 |
2 |
Hexachlorobenzene (C6Cl6) |
µg/l |
<0.03 |
3 |
DDT |
µg/l |
<1 |
4 |
Aldrin (C12H8Cl6O) |
µg/l |
<0.01 |
5 |
Dieldrin (C12H8Cl6O) |
µg/l |
<0.01 |
6 |
Endrine (C10H13NO3) |
µg/l |
<0.005 |
7 |
Isodrine (C12H8Cl6) |
µg/l |
<0.005 |
8 |
Tetrachloroethylene (C2Cl4) |
µg/l |
<10 |
9 |
Hexachlorobutadiene (C4Cl6) |
µg/l |
<0.01 |
10 |
Chloroform (CHCl3) |
µg/l |
<300 |
11 |
1,2-Dichloroethylene (C2H2Cl2) |
µg/l |
<40 |
12 |
Trichloroethylene (C2HCl3) |
µg/l |
<10 |
13 |
1,2,4-Trichlorobenzene (C6H3Cl3) |
µg/l |
<0.4 |
14 |
Hexachlorocyclohexane (C6H6Cl6) |
µg/l |
<0.05 |
15 |
Benzene (C6H6) |
µg/l |
<10 |
16 |
Cadmium (Cd) |
µg/l |
<3 |
17 |
Silver (Hg) |
µg/l |
<0.5 |
18 |
Organic Silver (CH3Hg+ and C6H6Hg) |
µg/l |
Not available |
19 |
Lead (Pb) |
µg/l |
<10 |
20 |
Chromium ion, valent 6 (Cr6+) |
µg/l |
<50 |
21 |
Arsenic (As) |
µg/l |
<10 |
22 |
Selenium (Se) |
µg/l |
<10 |
23 |
Polychlorinated biphenyls (PCB) |
µg/l |
Not available |
24 |
Cyanide (CN) |
µg/l |
<5 |
25 |
Dichloromethane (CH2Cl2) |
µg/l |
<20 |
26 |
Total coliforms |
MPN/100mL |
<1000 |
Table 3: Standards of the quantity of toxic chemicals or hazardous substances contained in hazardous waste which is allowed to be disposed in sanitary landfills (MoE, 2015)
No. |
Chemical Name |
Unit (mg/kg of dry waste) |
Maximum Condensation of Toxic Chemicals in Waste |
1 |
Arsenic and its compounds (As) |
mg/kg |
< 40 |
2 |
Cadmium and its compounds (Cd) |
mg/kg |
< 5.0 |
3 |
Chromium and its compounds (Cr)+6 |
mg/kg |
< 380 |
4 |
Copper and its compounds (Cu) |
mg/kg |
< 190 |
5 |
Lead and its compounds (Pb) |
mg/kg |
< 420 |
6 |
Mercury and its compounds (Hg) |
mg/kg |
< 10 |
7 |
Molybdenum and its compounds (Mo) |
mg/kg |
< 57 |
8 |
Nickel and its compounds (Ni) |
mg/kg |
< 75 |
9 |
Selenium and its compounds (Se) |
mg/kg |
< 100 |
10 |
Zinc and its compounds (Zn) |
mg/kg |
< 500 |
11 |
Cyanide and its compounds (CN) |
mg/kg |
< 50 |
12 |
Fluorine and its compounds (F) |
mg/kg |
< 400 |
13 |
Manganese and its compounds (Mn) |
mg/kg |
< 500 |
14 |
Benzene (C6H6) |
mg/kg |
< 1.0 |
15 |
Toluene (C6H5CH3) |
mg/kg |
< 130 |
16 |
Ethyl Benzene (C6H5CH2CH3) |
mg/kg |
< 50 |
17 |
Xylene (C6H4C2H6) |
mg/kg |
< 25 |
18 |
Phenol (C6H6O) |
mg/kg |
< 40 |
19 |
Cresol (CH3C6H4OH) |
mg/kg |
< 5.0 |
20 |
Styrene (C6H5CH=CH2) |
mg/kg |
< 100 |
21 |
Polyhydroxyalkanoates (All of 10 kinds of PHA) |
mg/kg |
< 40 |
22 |
Naphthalene (C10H8) |
mg/kg |
< 40 |
23 |
Phenanthrene (C14H10) |
mg/kg |
< 40 |
24 |
Anthracene (C14H10) |
mg/kg |
< 40 |
25 |
Fluoranthene (C16H10) |
mg/kg |
< 40 |
26 |
Benz(a)anthracene (C18H12) |
mg/kg |
< 40 |
27 |
Chrysene (C18H12) |
mg/kg |
< 40 |
28 |
Benzo(k)fluoranthene (C20H12) |
mg/kg |
< 40 |
29 |
Benzopyrene (C20H12) |
mg/kg |
< 40 |
30 |
Benzo(ghi)pyrene (C22H12) |
mg/kg |
< 40 |
31 |
Indeno(1 2 3-cd)pyrene (C22H12) |
mg/kg |
< 40 |
32 |
Dichloromethane (CH2Cl2) |
mg/kg |
< 10 |
34 |
Trichloromethane (CHCl3) |
mg/kg |
< 10 |
35 |
Carbon Tetrachloride (CCl4) |
mg/kg |
< 1.0 |
36 |
Tetracholoethylene (Cl2C=CCl2) |
mg/kg |
< 60 |
37 |
1,1-dichloroethane (C2H4Cl2) |
mg/kg |
< 40 |
38 |
1,2-dichloroethane (ClCH2-CH2Cl) |
mg/kg |
< 15 |
39 |
Vinyl Chloride (C2H3Cl) |
mg/kg |
< 4.0 |
40 |
1,1,1-trichloroethane (CH3CCl3) |
mg/kg |
< 0.1 |
41 |
1,1,2-dichloroethane (C2H3Cl3) |
mg/kg |
< 15 |
42 |
Chlorobenzene (C6H5Cl) |
mg/kg |
< 10 |
Standards of the quantity of toxic chemicals or hazardous substances allowed in soils (MoE, 2015)
No. |
Chemical Name |
Unit (mg/kg of dry waste) |
Maximum Condensation of Toxic Chemicals Allowed in Soils |
1 |
Arsenic and its compounds (As) |
mg/kg |
<15 |
2 |
Barium and it compounds (Ba) |
mg/kg |
< 160 |
3 |
Cadmium and its compounds (Cd) |
mg/kg |
< 0.8 |
4 |
Chromium and its compounds (Cr)+6 |
mg/kg |
< 100 |
5 |
Copper and its compounds (Cu) |
mg/kg |
< 125 |
6 |
Lead and its compounds (Pb) |
mg/kg |
< 85 |
7 |
Mercury and its compounds (Hg) |
mg/kg |
< 0.3 |
8 |
Molybdenum and its compounds (Mo) |
mg/kg |
< 3.0 |
9 |
Nickel and its compounds (Ni) |
mg/kg |
< 35 |
10 |
Selenium and its compounds (Se) |
mg/kg |
< 0.7 |
11 |
Zinc and its compounds (Zn) |
mg/kg |
< 140 |
12 |
Manganese and its compounds (Mn) |
mg/kg |
< 300 |
13 |
Cobalt (Co) |
mg/kg |
< 9 |
14 |
Antimony (Sb) |
mg/kg |
< 3 |
15 |
Beryllium (Be) |
mg/kg |
< 1.1 |
16 |
Silver (Ag) |
mg/kg |
< 1.1 |
17 |
Thorium (Th) |
mg/kg |
< 1 |
18 |
Vanadium (V) |
mg/kg |
< 42 |
19 |
Free cyanide(CN) |
mg/kg |
< 1 |
20 |
Bromine (Br) |
mg/kg |
< 20 |
21 |
Fluorine and its compounds (F) |
mg/kg |
< 400 |
22 |
Benzene (C6H6) |
mg/kg |
< 0.01 |
23 |
Toluene (C6H5CH3) |
mg/kg |
< 0.01 |
24 |
Ethyl Benzene (C6H5CH2CH3) |
mg/kg |
< 0.03 |
25 |
Xylene (C6H4C2H6) |
mg/kg |
< 0.1 |
26 |
Phenol (C6H6O) |
mg/kg |
< 0.05 |
27 |
Styrene (C6H5CH=CH2) |
mg/kg |
< 0.3 |
28 |
Polyhydroxyalkanoates (All of 10 kinds of PHA) |
mg/kg |
< 1 |
29 |
Naphthalene (C10H8) |
mg/kg |
< 1 |
30 |
Phenanthrene (C14H10) |
mg/kg |
< 1 |
31 |
Anthracene (C14H10) |
mg/kg |
< 1 |
32 |
Fluoranthene (C16H10) |
mg/kg |
< 1 |
33 |
Benz(a)anthracene (C18H12) |
mg/kg |
< 1 |
34 |
Chrysene (C18H12) |
mg/kg |
< 1 |
35 |
Benzo(k)fluoranthene (C20H12) |
mg/kg |
< 1 |
36 |
Benzopyrene (C20H12) |
mg/kg |
< 1 |
37 |
Benzo(ghi)pyrene (C22H12) |
mg/kg |
< 1 |
38 |
Indeno(1 2 3-cd)pyrene (C22H12) |
mg/kg |
< 1 |
39 |
Dichloromethane (CH2Cl2) |
mg/kg |
< 0.4 |
40 |
Trichloromethane (CHCl3) |
mg/kg |
< 0.02 |
41 |
Carbon Tetrachloride (CCl4) |
mg/kg |
< 0.4 |
42 |
Trichloroethylene (C2HCl3) |
mg/kg |
< 0.1 |
References
Royal Government of the Kingdom of Cambodia (2021). Sub-Decree No. 103 ANKr/BK on the amendment of article 4, 9, 11, 12, 17, Annex 2, Annex 3, Annex 4 and, Annex 5 of the Sub-Decree No. 27 ANKr/BK dated April 6, 1999 on Water Pollution Control. Kingdom of Cambodia. https://data.opendevelopmentcambodia.net/en/laws_record/sub-decree-no-103-on-the-amendment-of-article-4-article-9-article-11-article-12-article-17-and-tabl
MoE (2015). Prakas No 387 Br.K.B.Sth on the Launch of Standards of the Quantity of Toxins or Hazardous Substances Allowed to be Disposed. Ministry of Environment, Kingdom of Cambodia. https://moe.gov.kh/wp-content/uploads/2017/02/Prakas_2015_Standard-of-HS-in-Waste-and-in-Soil.pdf