DECISION

REGARDING ISSUING THE SECTOR STANDARDS: HYGIENE STANDARDS FOR CLEAN WATER

THE MINISTER OF PUBLIC HEALTH

- Pursuant to the Law on Protection of People’s Health dated 07/11/1989;
- Pursuant to Decree No. 49/2003/NĐ-CP dated 15/5/2003 of the Administration regulating functions, rights and duties and Public Health Ministry organisational structure;
- Pursuant to Decree No.104/2000/QĐ-TTg dated 25/8/2000 of the PM regardingapproval of the National Strategy for RWSS uo to the year 2020;
- Following Government Order of Goods Quality dated 24/12/1999;
- Based on suggestions made by the Department of Preventive Health and HIV/AIDSPrevention and Control of the MOH,

DECISION

Article 1. Issued alongside with this Decision the sector standards : Hygiene standards for clean water.

Article 2. This Decision shall be effective in 15 days after being published on Official Gazette.

Article 3. Department of Preventive Health and HIV/AIDSPrevention and Control of the MOH, shall have to organise and direct the implementation of this Decision

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Tran Chi Liem
(Signed)

HYGIENE STANDARDS FOR CLEAN WATER
(Issued alongside with Decision No. 09/2005/QĐ-BYTdated 11/ 3/ 2005 of MOH)

I. DEFINITIONS OF WORDS

Clean water mentioned as per these standards is water used for the purposes of domestic individual and family consumption, but not as direct drinking and cooking water. If water is used for direct drinking and cooking purposes it has to be treated to meet required standards set forth under Decision 1329/QĐ - BYT dated 18/4/2002 of the MOH.

II. SCOPE OF ADJUSTMENT

These standards shall be applied for household clean water supply, piped water supply stations servicing max 500 people and other forms of clean water supply.

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1. Organisations, individuals that exploit water sources to supply the household users or water supply for less than 500 users.

2. Water supply systems and household users are encouraged to apply The Standards of Hygienic Water for Drinking and Cooking issued under Decision 1329/2002/QĐ-BYT dated18/4/2002 of the MOH.

IV. TABLE OF STANDARD PARAMETERS:

Re

Parameters

Unit

Max limits

Method of test TCVN=VN standards no.

Control level (*)

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1

Colour

TCU

15

TCVN 6187 -1996 (ISO 7887 -1985)

I

2

Odour

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Perception

I

3

Turbidity

NTU

5

TCVN 6184 -1996

I

4

...

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6.0-8.5 (**)

TCVN 6194 - 1996

I

5

Hardness

mg/l

350

TCVN 6224 -1996

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6

Ammonia (as per NH4+)

mg/l

3

TCVN 5988 -1995 (ISO 5664 -1984)

I

7

Nitrat (as per NO3- )

mg/l

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TCVN 6180 -1996 (ISO 7890 -1988)

I

8

Nitrit (as per NO2- )

mg/l

3

TCVN 6178 -1996 (ISO 6777 -1984)

I

9

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mg/l

300

TCVN 6194 -1996 (ISO 9297 -1989)

I

10

Arsenic

mg/l

0.05

TCVN 6182-1996 (ISO 6595-1982)

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11

Iron

mg/l

0.5

TCVN 6177 -1996 (ISO 6332 -1988)

I

12

Oxidation as per KMn04

mg/l

...

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Normal technical norm of the Labour medical and sanitation environment institute

I

13

TDS

mg/l

1200

TCVN 6053 -1995 (ISO 9696 -1992)

II

14

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mg/l

2

TCVN 6193-1996 (ISO 8288 -1986)

II

15

Cyanide

mg/l

0.07

TCVN 6181 -1996 (ISO 6703 -1984)

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16

Fluoride

mg/l

1.5

TCVN 6195-1996 (ISO 10359 -1992)

II

17

Lead

mg/l

...

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TCVN 6193 -1996 (ISO 8286 -1986)

II

18

Manganese

mg/l

0.5

TCVN 6002 -1995 (ISO 6333 -1986)

II

19

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mg/l

0.001

TCVN 5991 -1995 (ISO 5666/1 -1983 ISO 5666/3 -1989)

II

20

Zinc

mg/l

3

TCVN 6193 -1996 (ISO 8288 -1989)

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II. Micro-biology

21

Total Coliform

bacteria /100ml

50

TCVN 6187 - 1996 (ISO 9308 - 1990)

I

22

E. Coliform or heatproof Coliform

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0

TCVN 6187 - 1996 (ISO 9308 -1990)

I

Explanation:

1. (*) Level of inspection:

a) Level I: Including parameters to be inspected prior to use and then inspected once every 6 months. These are parameters that can be affected by the weather; and the water supply units and the public health units in localities can carry out. The inspection of water quality basing on those parameters helps in the monitoring of the treatment process of the supply stations as well as in the change of water quality in individual households water supply in order to find measures to correct timely.

b) Level II: Including ‘parameters’ of requiring modern equipment for inspection and little fluctuation due to the change of weather. These parameters are inspected at these times:

- Before the use of the water source.

- Water sources exploited in areas with high pollution potential of relevant elements or elements already existed in nature.

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- When an evironment crisis occurs affecting the cleanliness of the source of water.

- When there are doubts that water is contaminated due to the presence of the elements presented in the above table.

- Other special requirements.

2. (**) Specifically for the parameter of pH: the permissible range would be from 6,0 to 8,5.