VGP – The water quality in Ha Noi’s lakes, including 86 in the inner city and 44 on the outskirts has improved markedly afte dredging and cleaning work has been carried out for months, the Ha Noi Sewage and Drainage Company reported.
In 2016, the city treated 67 lakes. In 2017, 19 lakes were cleaned.
The company has used chemical products together with a number of measures like the installation of aquatic rafts with a view to increas ing oxygen and the self-cleaning ability of the lakes.
The main task for Ha Noi lakes is to regulate drainage, drought and environmental landscapes and they have met these criteria.
According to the Centre for Environment and Community Research (CECR) report released in 2015, the number of lakes in Ha Noi decreased to 112 from 122 between 2010 and 2015. The water surface also dropped by 72,000 sq.m compared to 2010.
Data from the CECR analysis showed that a lot of lakes, which were once beautiful spots for the city’s residents to visit and enjoy, were seriously deteriorating due to rising levels of pollution.
Test on water samples taken at these lakes revealed that lakes contained an excessive amount of pollution, compared to national standards.
To improve the water environment at lakes, the municipal People’s Committee had assigned the Department of Natural Resources and Environment to research and implement the testing and treatment of water pollution in rivers and lakes in the city./.
By Khanh Phuong