THE MINISTRY OF NATURAL RESOURCES AND ENVIRONMENT | THE SOCIALIST REPUBLIC OF VIETNAM |
No. 65/2015/TT-BTNMT | Hanoi, December 21, 2015 |
CIRCULAR
PROMULGATION OF NATIONAL TECHNICAL REGULATION ON ENVIRONMENT
Pursuant to the Law on Technical Standards and Regulations dated June 29, 2006;
Pursuant to the Law on Environmental Protection dated June 23, 2014;
Pursuant to the Government’s Decree No. 127/2007/ND-CP dated August 01, 2007 on elaboration of some Articles of the Law on Technical Standards and Regulations;
Pursuant to the Government’s Decree No. 21/2013/ND-CP dated March 04, 2013 defining functions, tasks, entitlements and organizational structure of the Ministry of Natural Resources and Environment;
At the request of Director General of Vietnam Environment Administration, Director of Department of Science and Technology, Director of Department of Legal Affairs;
The Minister of Natural Resources and Environment hereby promulgates a Circular on national technical regulation on environment.
Article 1. The national technical regulation on environment:QCVN 08-MT:2015/BTNMT - National technical regulation on surface water quality is promulgated together with this Circular.
Article 2. This Circular comes into force from March 01, 2016.
Article 3. Director General of Vietnam Environment Administration, heads of affiliates of the Ministry of Natural Resources and Environment, Directors of Departments of Natural Resources and Environment of provinces and central-affiliated cities and relevant organizations and individuals are responsible for the implementation of this Circular./.
| THE MINISTER |
QCVN 08-MT:2015/BTNMT
NATIONAL TECHNICAL REGULATION ON SURFACE WATER QUALITY
Foreword
QCVN 08-MT:2015/BTNMT is prepared by the Drafting Committee for national technical regulation on surface water quality,submitted by the Vietnam Environment Administration, Department of Science, Technology and Environment and Department of Legal Affairs to obtain approval from, and issued as an appendix to the Circular No. 65/2015/TT-BTNMT dated December 21, 2015 by, the Ministry of Natural Resources and Environment.
NATIONAL TECHNICAL REGULATION ON SURFACE WATER QUALITY
1. GENERAL PROVISIONS
1.1. Scope
1.1.1. This document provides for Maximum permissible limits of surface water quality parameters.
1.1.2. This document is applied to:
- assess and control the quality of surface water, which serves as the basis for protecting and using water in an appropriate manner.
- serve as a basis for formulating and approving the water use planning based on determined purposes.
- assess the conformity of surface water quality with the approved water use planning.
- serve as the basis for controlling sources discharged into receiving water to ensure that the surface water conforms to purposes.
- serve as the basis for adopting measures for improving and restoring water quality.
1.2. Definitions
“surface water” means water flowing through or stagnating on the ground, rivers, streams, canals, ditches, lakes, ponds, lagoons, etc.
2. SPECIFICATIONS
Maximum permissible limits of surface water quality parameters are provided in Table 1.
Table 1: Maximum permissible limits of surface water quality parameters
No. | Parameters | Unit | Maximum limit | Maximum limit | Maximum limit | Maximum limit | |||
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| A | A | B | B |
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| A1 | A2 | B1 | B2 |
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|
1 | pH |
| 6-8.5 | 6-8.5 | 5.5-9 | 5.5-9 |
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|
|
2 | BOD5 (20°C) | mg/l | 4 | 6 | 15 | 25 |
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|
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3 | COD | mg/l | 10 | 15 | 30 | 50 |
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|
|
4 | Dissolved Oxygen (DO) | mg/l | ≥ 6 | ≥ 5 | ≥ 4 | ≥ 2 |
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|
|
5 | Total suspended solids (TSS) | mg/l | 20 | 30 | 50 | 100 |
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|
|
6 | Ammonium (NH4+ expressed as N) | mg/l | 0.3 | 0.3 | 0.9 | 0.9 |
|
|
|
7 | Chloride (Cl-) | mg/l | 250 | 350 | 350 | - |
|
|
|
8 | Fluoride (F-) | mg/l | 1 | 1.5 | 1.5 | 2 |
|
|
|
9 | Nitrite (NO-2 expressed as N) | mg/l | 0.05 | 0.05 | 0.05 | 0.05 |
|
|
|
10 | Nitrate (NO-3 expressed as N) | mg/l | 2 | 5 | 10 | 15 |
|
|
|
11 | Phosphate (PO43- expressed as P) | mg/l | 0.1 | 0.2 | 0.3 | 0.5 |
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12 | Cyanide (CN-) | mg/l | 0.05 | 0.05 | 0.05 | 0.05 |
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|
13 | Arsenic (As) | mg/l | 0.01 | 0.02 | 0.05 | 0.1 |
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14 | Cadimium (Cd) | mg/l | 0.005 | 0.005 | 0.01 | 0.01 |
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|
|
15 | Lead (Pb) | mg/l | 0.02 | 0.02 | 0.05 | 0.05 |
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16 | Chromium VI (Cr6+) | mg/l | 0.01 | 0.02 | 0.04 | 0.05 |
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17 | Total Chromium | mg/l | 0.05 | 0.1 | 0.5 | 1 |
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18 | Copper (Cu) | mg/l | 0.1 | 0.2 | 0.5 | 1 |
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19 | Zinc (Zn) | mg/l | 0.5 | 1.0 | 1.5 | 2 |
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20 | Nickel (Ni) | mg/l | 0.1 | 0.1 | 0.1 | 0.1 |
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|
21 | Manganese (Mn) | mg/l | 0.1 | 0.2 | 0.5 | 1 |
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22 | Mercury (Hg) | mg/l | 0.001 | 0.001 | 0.001 | 0.002 |
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23 | Iron (Fe) | mg/l | 0.5 | 1 | 1.5 | 2 |
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24 | Surface active substances | mg/l | 0.1 | 0.2 | 0.4 | 0.5 |
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25 | Aldrin | µg/l | 0.1 | 0.1 | 0.1 | 0.1 |
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26 | Benzene hexachloride (BHC) | µg/l | 0.02 | 0.02 | 0.02 | 0.02 |
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27 | Dieldrin | µg/l | 0.1 | 0.1 | 0.1 | 0.1 |
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28 | Total Dichloro diphenyl trichloroethane (DDTS) | µg/l | 1.0 | 1.0 | 1.0 | 1.0 |
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29 | Heptachlor & Heptachlorepoxide | µg/l | 0.2 | 0.2 | 0.2 | 0.2 |
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|
30 | Total Phenols | mg/l | 0.005 | 0.005 | 0.01 | 0.02 |
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31 | Total oils & grease | mg/l | 0.3 | 0.5 | 1 | 1 |
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32 | Total Organic Carbon, TOC | mg/l | 4 | - | - | - |
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33 | Gross alpha activity α | Bq/I | 0.1 | 0.1 | 0.1 | 0.1 |
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34 | Gross beta activity β | Bq/I | 1.0 | 1.0 | 1.0 | 1.0 |
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35 | Coliform | MPN or | 2500 | 5000 | 7500 | 10000 |
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36 | E.coli | MPN or | 20 | 50 | 100 | 200 |
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Note:
Surface water is classified into four categories: A1, A2, B1 and B2in order to assess and control water quality, thereby serving various water purposes. Those categories are sorted in descending order.
A1 - Used for supplying domestic water (after being commonly treated) or conserving aquatic animal and plants and other purposes included in Categories A2, B1 and B2.
A2- Used for supplying domestic water but the application of an appropriate treatment technology is required or other purposes included in Categories B1 and B2.
B1 - Used for irrigated agriculture or other purposes that require similar water quality or purposes included in Categories B2.
B2 - Used for waterway and other purposes that require low water quality.
3. METHOD FOR DETERMINATION
3.1. Methods for sampling surface water and parameterspresent in surface waterare specified in the following standards:
No. | Parameters | Analytical methods and standard code |
1 | Sampling | - TCVN 6663-1:2011 (ISO 5667-2:2006), Water quality - Sampling - Part 1: Guidance on sampling techniques; - TCVN 6663-3:2003 (ISO 5667-3:1985), Water quality - Sampling - Part 3: Guidance on the preservation and handling of water samples; - TCVN 5994:1995 (ISO 5667-4:1987) - Water quality - Sampling. Guidance on sampling from natural lakes and man-made lakes; - TCVN 6663-6:2008 (ISO 5667-6:2005), Water quality - Sampling - Part 6: Guidance on sampling of rivers and streams; |
2 | pH | TCVN 6492:2011 (ISO 10523:2008) - Water quality – Determination of pH |
3 | Dissolved Oxygen (DO) | - TCVN 7324:2004 (ISO 5813:1983) - Water quality – Determination of dissolved oxygen – Iodometric method; - TCVN 7325:2004 (ISO 5814:1990) - Water quality – Determination of dissolved oxygen – Electrochemical probe method. |
4 | Total suspended solids (TSS) | - TCVN 6625:2000 (ISO 11923:1997) - Water quality – Determination suspended solids by filtration through glass-fibre filters. - SMEWW 2540.D; |
5 | COD | - TCVN 6491:1999 (ISO 6060:1989) - Water quality - Determination of the chemical oxigen demand (COD); - SMEWW 5220.C:2012; - SMEWW 5220.B:2012; |
6 | BOD5 (20°C) | - TCVN 6001-1:2008 (ISO 5815-1:2003) Part 1: Dilution and seeding method with allylthiourea addition; - TCVN 6001-2:2008 (ISO 5815-2:2003) Part 2: Method for undiluted samples; - SMEWW-5210.B:2012 |
7 | Ammonium (NH4+) | - TCVN 6179-1:1996 (ISO 7150-1:1984) - Water quality – Determination of ammonium Part 1: Manual spectrometric method; - TCVN 6660:2000 (ISO 14911:1988) - Water quality – Determination of dissolved Li+, Na+, NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ using ion chromatography - Method for water and waste water; - TCVN 5988:1995 (ISO 5664:1984) - Water quality - Determination of aminonium - Distillation and titration method; - SMEWW-4500-NH3.F:2012. |
8 | Chloride (Cl-) | - TCVN 6494:1999 - Water quality - Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions. - TCVN 6194:1996 (ISO 9297:1989) - Water quality - Determination of chloride - Silver nitrate titration with chromate indicator (Mohr's method). - TCVN 6494-1:2011 (ISO 10304-1:2007) - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. - SMEWW 4500.CI-.B:2012 |
9 | Fluoride (F-) | - TCVN 6494:1999 - Water quality - Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions. - TCVN 6195:1996 (ISO 10359-1:1992) - Water quality – Determination of fluoride. Electrochemical probe method for potable and lightly polluted water. - TCVN 6494-1:2011 (ISO 10304-1:2007) - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. - SMEWW 4500.F-.D:2012 |
10 | Nitrite (NO-2) | - TCVN 6494:1999 - Water quality - Determination of dissolved fluoride, chloride, nitrite, orthophosphate, bromide, nitrate and sulfate ions, using liquid chromatography of ions. - TCVN 6178:1996 (ISO 6777:1984) - Water quality – Determination of nitrite. Molecular absorption spectrometric method. - TCVN 6494-1:2011 (ISO 10304-1:2007) - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. - SMEWW 4500-NO2.B:2012 |
11 | Nitrate (NO-3) | - TCVN 6180:1996 (ISO 7890-3:1988) - Water quality - Determination of nitrate. Spectrometric method using sulfosalicylic acid - TCVN 6494-1:2011 (ISO 10304-1:2007) - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. - TCVN 7323-1:2004 (ISO 7890-1:1986) - Water quality - Determination of nitrate - Part 1: 2,6-Dimethylphenol spectrometric method - TCVN 7323-2:2004 (ISO 7890-2:1986) - Water quality – Determination of nitrate. Part 2: 4-Fluorophenol spectrometric method after distillation. - SMEWW-4500 NO3-.E:2012; - EPA 352.1 |
12 | Phosphate (PO43-) | - TCVN 6494-1:2011 (ISO 10304-1:2007) - Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate. - TCVN 6202:2008 (ISO 6878:2004) - Water quality - Determination of phosphorus – Ammonium molybdate spectrometric method - SMEWW-4500-P.E:2012; - SMEWW-4500-P.D:2012; |
13 | Cyanide (CN-) | - TCVN 6181:1996 (ISO 6703-1:1984) - Water quality – Determination of total cyanide. - TCVN 7723:2007 (ISO 14403:2002) - Water quality - Determination of total cyanide and free cyanide by continuous flow analysis - SMEWW 4500-CN-.D:2012; - SMEWW 4500-CN-.E:2012; |
14 | Arsenic (As) | - TCVN 6626:2000 (ISO 11969:1996) - Water quality –Determination arsenic - Atomic absorption spectrometric method (hydride technique). - SMEWW 3114.B:2012. - SMEWW 3120.B:2012. |
15 | Cadimium (Cd) | - TCVN 6197:2008 Water quality - Determination arsenic - Atomic absorption spectrometric method (hydride technique);- SMEWW 3113.B:2012; - SMEWW 3120.B:2012. |
16 | Lead (Pb) | - TCVN 6193:1996 (ISO 8288:1986) - Water quality - Determination of cobalt nickel, copper, zinc, cadmium, and lead Flame atomic absorption spectrometric methods. - SMEWW 3113.B:2012; - SMEWW 3120.B:2012; |
17 | Total Chromium | - TCVN 6222:2008 Water quality – Determination of chromium – Atomic absorption spectrometric methods - SMEWW 3111.B:2012; - SMEWW 3120.B:2012; |
18 | Chromium VI (Cr6+) | - TCVN 6658:2000 (ISO 11083:1994) - Water quality - Determination of chromium (VI) - Spectrometric method using 1,5-diphenylcarbazide; - SMEWW 3500-Cr.B:2012. |
19 | Copper Cu) | - TCVN 6193:1996 (ISO 8288:1986) - Water quality - Determination of cobalt nickel, copper, zinc, cadmium, and lead Flame atomic absorption spectrometric methods. - EPA 6010.B; - SMEWW 3111.B:2012; - SMEWW 3120.B:2012; |
20 | Zinc (Zn) | - TCVN 6193:1996 (ISO 8288:1986) - Water quality - Determination of cobalt nickel, copper, zinc, cadmium, and lead Flame atomic absorption spectrometric methods. - EPA 6010.B; - SMEWW 3111.B:2012; - SMEWW 3120.B:2012; |
21 | Nickel (Ni) | - TCVN 6193:1996 (ISO 8288:1986) - Water quality - Determination of cobalt nickel, copper, zinc, cadmium, and lead Flame atomic absorption spectrometric methods. - EPA 6010.B; - SMEWW 3111.B:2012; - SMEWW 3120.B:2012; |
22 | Iron (Fe) | - TCVN 6658:2000 (ISO 11083:1994) - Water quality - Determination of iron- Spectrometric method using 1.10- phenantrolin. - SMEWW 3111.B:2012; - SMEWW 3500-Fe.B:2012; |
23 | Mercury (Hg) | - TCVN 7877:2008 (ISO 5666:1999) - Water quality – Determination of mercury - TCVN 7724:2007 (ISO 17852:2006) - Water quality - Determination of mercury - Method using atomic fluorescence spectrometry; - EPA 7470.A; - SMEWW 3112.B:2012; |
24 | Manganese (Mn) | - TCVN 6002:1995 (ISO 6333:1986) - Water quality - Determination of manganese - Formaldoxime spectrometric method. - SMEWW 3111.B:2012; |
25 | Surface active substances | - TCVN 6336:1998 (ASTM D 2330:1988) - Standard test method for methylene blue active substances. |
26 | Total oils and grease | - TCVN 7875:2008 Water - Determination of oil and grease - Partition-infrared method; - SMEWW 5520.B:2012; |
27 | Total Phenols | - TCVN 6216:1996 (ISO 6439:1990) - Water quality - Determination of phenol index - 4-aminoantipyrin spectrometric methods after distillation. - TCVN 7874:2008 - Water - Determination of phenol and derivatives of phenol - Liquid-liquid extraction gas chromatographic method; - SMEWW 5530:2012 |
28 | Total Organic Carbon, TOC | - TCVN 6634:2000 (ISO 8245:1999) - Water quality - Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC); - SMEWW 5319.B:2012; - SMEWW 5310.C:2012; |
29 | DDTs | - TCVN 9241:2012 - Water quality - Determination of certain organochlorine insecticides, polychlorinated biphenyls and chlorobenzenes - Gas chromatographic method after liquid - liquid extraction; - EPA 8081.B; - EPA 8270.D. |
30 | BHC |
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31 | Dieldrin |
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32 | Aldrin |
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33 | Heptachlor & Heptachlorepoxide |
|
34 | Gross alpha activity α | - TCVN 6053:2011 (ISO 9696:2007) - Water quality – Measurement of gross alpha activity in non-saline water – Thick source method |
35 | Gross beta activity β | - TCVN 6219:2011 (ISO 9697:2008) - Water quality - Measurement of gross beta activity in non-saline water - Thick source method. |
36 | E.coli | - TCVN 6187-2:1996 (ISO 9308-2:1990(E)) - Water quality - Detection and enumeration of organisms thermotolerant coliform organisms and presumptive Escherichia coli. Part 2: Multiple tube (most probable number) method; |
37 | Coliform | - TCVN 6187-2:1996 (ISO 9308-2:1990(E)) - Water quality - Detection and enumeration of organisms thermotolerant coliform organisms and presumptive Escherichia coli. Part 2: Multiple tube (most probable number) method; - SMEWW 9221.B:2012; |
3.2. It is allowed to use the analytical methods specified in other national and international standards that have the accuracy equivalent to or higher than those specified in the standards in Section 3.1.
4. IMPLEMENTATION
4.1. This document supersedes QCVN 08:2008/BTNMT - National technical regulation on surface water quality that is promulgated in the Decision No. 16/2008/QD-BTNMT dated December 31, 2008 of the Minister of Natural Resources and Environment.
4.2. QCVN 38:2011/BTNMT - National technical regulation on Surface Water Quality for protection of aquatic lifes and QCVN 39:2011/BTNMT - National technical regulation on Water Quality for irrigated agriculture that are promulgated in the Circular No. 43/2011/TT-BTNMT dated December 12, 2011 of the Minister of Natural Resources and Environment are null and void from the effective date of this document.
4.3. Environment authorities shall provide guidelines, inspect and supervise the implementation of this document.
4.4. In the cases where any of the standards referred to in Section 3.1 is amended or replaced, the newest one shall apply.
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