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Water Quality, Groundwater Standards (TCVN 5944, 1995)

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WATER QUALITY:
GROUND WATER QUALITY STANDARD
TCVN 5944-1995

1. Scope

1.1 This standard specifies parameter limits and maximum allowable concentrations of pollutants in ground water.

1.2 This standard is applied to evaluation of quality of a ground water source and to monitoring of pollution status of the ground water in a specific area.

2. Limitation Values

2.1 Parameters, pollutants and limitation value of those in ground water are shown in the table 1.

2.2 Standard methods of analysis of parameters and concentrations of pollutants in ground water are specified in available current TCVNs.

Table 1
Parameter Limits and Maximum Allowable Concentrations of Pollutants in Ground Water

Nº	Parameter and Pollutant	Unit	Limitation Value
1	pH value		6,5 - 8,5
2	Colour	Pt - Co	5 - 50
3	Hardness (as CaCO₃)	mg/l	300 - 500
4	Total solids	mg/l	750 - 1500
5	Arsenic	mg/l	0,05
6	Cadmium	mg/l	0,01
7	Chloride	mg/l	200 - 600
8	Lead	mg/l	0,05
9	Chromium (VI)	mg/l	0,05
10	Cyanide	mg/l	0,01
11	Copper	mg/l	1,0
12	Fluoride	mg/l	1,0
13	Zink	mg/l	5,0
14	Manganese	mg/l	0,1 - 0,5
15	Nitrate	mg/l	45
16	Phenol compound	mg/l	0,001
17	Iron	mg/l	1 - 5
18	Sulphate	mg/l	200 ¸ 400
19	Mercury	mg/l	0,001
20	Selenium	mg/l	0,01
21	Fecal coli	MPN/100 ml	Not detectable
22	Coliform	MPN/100 ml	3

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Acknowledgement: Text courtesy of NEA Policy Division, MOSTE.

Disclaimer: APCEL has tried to ensure the accuracy, reliability and completeness of the information in this database; however, APCEL does not guarantee the accuracy, reliability or completeness of this information. If you encounter an error, please notify us by e-mail at lawapcel@nus.edu.sg.

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