Water from Nhue river (Photo: VNA) Hanoi (VNS/VNA) - The quality of surface water in many lakes and rivers in the north hasimproved, but 15 monitoring areas of 185 that have been monitoredremain heavily polluted, mainly on the Cau and Nhue-Day rivers.
River water in the capital city of Hanoi was also seriously polluted. The water quality monitoring assessment was carried out in May at185 monitoring points in five river basins by the Centre for EnvironmentalMonitoring in the North.
According to the report, the water quality in the Cau River has improved compared to thesame period of last year.
At the monitoring points in the upstream area in northern Bac Kan province,river water was deemed clean enough for daily use with the water qualityindex (WQI) in a good range between 89-92.
On the Cau River running through Bac Giang and Bac Ninh provinces, most of theWQI of the monitoring points were at an average of 50-70, except for somepoints in downstream areas, meaning the water can be used for aquaculture.
On the tributaries of Nghinh Tuong, Du and Thuong rivers, the water was ata good to a very good level of between 91-100, making it clean enough for dailyuse.
The water on the CongRiver has a moderate level of between 51 and 57, which can only be used fortraffic waterway activities due to the discharge of domestic wastewater. Someof the monitoring points have been recorded as qualified for irrigation andaquaculture purposes.
Meanwhile, parts of the water surface in the Cau River basin in Cau Dao Xa and Cau Bong Toi monitoring points were recorded as polluted and have seen nosigns of improvement.
The pollution was blamed on the discharge of domestic wastewater as wellas wastewater from craft villages in Bac Ninh province and Thai Nguyen city.
In the Nhue-Day River basin – one of theriver basins with the poorest water quality in the north, up to 62 per cent ofthe monitoring points recorded a WQI of below 50, with almost a third ofthose below 25.
As for the section of the Nhue River passing through Hanoi, pollution continued to occur from Phuc La to Cong Nhat Tuuwith the WQI index of between 10-25 due to the discharge of wastewater fromcraft villages in the city.
Apart from the Hong(Red), Thai Binh and Da rivers, the rivers in the inner cityremained seriously polluted with a WQI from 12-28 and showed no signs ofimprovement compared to the same period last year. The water cannot be used forcooking, drinking or production activities./.
River water in the capital city of Hanoi was also seriously polluted. The water quality monitoring assessment was carried out in May at185 monitoring points in five river basins by the Centre for EnvironmentalMonitoring in the North.
According to the report, the water quality in the Cau River has improved compared to thesame period of last year.
At the monitoring points in the upstream area in northern Bac Kan province,river water was deemed clean enough for daily use with the water qualityindex (WQI) in a good range between 89-92.
On the Cau River running through Bac Giang and Bac Ninh provinces, most of theWQI of the monitoring points were at an average of 50-70, except for somepoints in downstream areas, meaning the water can be used for aquaculture.
On the tributaries of Nghinh Tuong, Du and Thuong rivers, the water was ata good to a very good level of between 91-100, making it clean enough for dailyuse.
The water on the CongRiver has a moderate level of between 51 and 57, which can only be used fortraffic waterway activities due to the discharge of domestic wastewater. Someof the monitoring points have been recorded as qualified for irrigation andaquaculture purposes.
Meanwhile, parts of the water surface in the Cau River basin in Cau Dao Xa and Cau Bong Toi monitoring points were recorded as polluted and have seen nosigns of improvement.
The pollution was blamed on the discharge of domestic wastewater as wellas wastewater from craft villages in Bac Ninh province and Thai Nguyen city.
In the Nhue-Day River basin – one of theriver basins with the poorest water quality in the north, up to 62 per cent ofthe monitoring points recorded a WQI of below 50, with almost a third ofthose below 25.
As for the section of the Nhue River passing through Hanoi, pollution continued to occur from Phuc La to Cong Nhat Tuuwith the WQI index of between 10-25 due to the discharge of wastewater fromcraft villages in the city.
Apart from the Hong(Red), Thai Binh and Da rivers, the rivers in the inner cityremained seriously polluted with a WQI from 12-28 and showed no signs ofimprovement compared to the same period last year. The water cannot be used forcooking, drinking or production activities./.
VNA
