Pollution in the DongNai River, mostly from thousands of factories, continues to affect thewater supply to residents and farmland in HCM City and surroundingprovinces.
The river supplies water for about 12 million people and about 1.8million hectares of cultivated land around HCM City and 11 surroundingprovinces.
The river is polluted by untreated waste water from millions ofhouseholds and thousands of factories. Hydroelectricity generation,irrigation and other activities have also contributed to the pollution.
In downstream areas below the Tri An Hydro-power Reservoir and DauTieng Reservoir to the river’s mouth, water is heavily polluted in manyareas, according to southern Dong Nai Province’s EnvironmentalObservation Centre.
While water quality has declined, water shortages have occurredduring the dry season, making residents in four districts in Dong NaiProvince struggle hard to find water for daily use and production.
Le Viet Hung, director of the province’s Department of NaturalResources and Environment, said the Dong Nai River’s Section 3 exceededpermissible levels for the quantity of pollutants, including organicsubstances, iron and bacteria.
Lam Thi Thu Suu, a coordinator of the Vietnam Rivers Network, saidDong Nai River in particular, as well as many other rivers in thecountry, had been over-exploited for hydro-power plant operations.
Discharged pollutants in downstream areas have also caused severe pollution in the river.
Experts have urged each province to collect and treat waste water before releasing it into the river.
They said that a project to protect the Dong Nai River basin,approved by the Government in 2007, needed to be implemented as soon aspossible.
The project, to run until 2020 at a cost of VND2 trillion (US$95million), targets solving pollution problems at 90 per cent of factorieslocated along the river by 2015.
It also aims to have waste water treatment systems at all industrialparks, export processing zones and hi-tech industrial zones along theriver by 2020.
Experts said provinces should also develop measures to control illegal deforestation and protect the river’s ecological system.
Factories, industrial parks and hydro-power plants should no longer be built in the river’s upstream areas, they said.
The affected provinces are Dak Nong, Dak Lak, Lam Dong, Ninh Thuan,Binh Thuan, Dong Nai, Binh Phuoc, Binh Duong, Ba Ria–Vung Tau, Long Anand Tay Ninh.
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