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Briefing Current status of data collection and proposal on existing system of river classification systems and associated water quality standards Department of water management Ministry of Nature Resources and Environment, Vietnam The 13th, Meeting of AWGWRM, Brunei, 2013.

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Briefing

Current status of data collection and proposal on existing system of river classification systems and associated water quality standards

Department of water management

Ministry of Nature Resources and Environment, Vietnam

The 13th, Meeting of AWGWRM, Brunei, 2013


Data collectionfrom 03 countries: Phillipines, Thailand and Vietnam, other conutry have no or did not send datas

- Phillipines: Water Classification by Beneficial Use (in five class)

- Thailand: Water Classification by condition and Beneficial Usage (in five class)

- Vietnam: 01 National standard and 03 related National technical regulation on surface water quality, water for agriculture and aquaculture.




- Vietnam: TCVN 5942-1995 Standard(31 parameters) Water quality for Surface water quality standard (02 class)

Standard A can providing for domestical pupose after some treatment

Standard B can providing for other puposes.


- Vietnam: National technical regulation on surface water quality: 32 parameters

  • Class A and B (raw water for domestical pupose other puposes)

  • sub-class A1, A2, B1, B2 (lower than A and B standard)


- Vietnam: National technical regulation on water for agriculture:

mainly for irrigation with 15 parameters


- Vietnam: National technical regulation on water for aquaculture

mainly for protection of aquatic life with 19 parameters


Overall Water quality in Vietnam

  • In general, Surface water in the upstream reaches of almost rivers is still relatively good, In the downstream reaches of major rivers the water quality gradually deteriorates. Water in lakes and canals in the large cities and densely populated areas are severely contaminated thus affecting the water supply for domestic use.

    Water pollution

    -Water source pollution: The impacts of polluted water sources on society are becoming obvious and more serious, especially in the urbanization and industrialization process of the country.




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