Experts warn of environmental incidents as only 10% of urban waste water treated
Untreated or improperly treated waste water from treatment plants may lead to eutrophication, which causes algae blooms in rivers and lakes, leading to pollution, but also causing serious environmental incidents. According to the Vietnam Water Supply and Drainage Association, by the end of 2016, Vietnam treated only 10 percent of total urban waste water. There are only 35 operating concentrated water treatment systems in provinces and cities with total designed capacity of 850,000 cubic meters per day. Of the 35 waste water treatment plants, there are only five plants using biological treatment technology, 15 plants with second-level biological treatment technology, and eight plants with second-level biological treatment technology in association with nitrogen treatment.
