To Lich, the most polluted river in Hanoi, has received 1 million cubic meters of water from the West Lake, but it is still not fully clean.

The water in Hanoi's To Lich River has returned to its familiar polluted and foul-smelling state after running clear for a few days.

Hanoi Sewage and Drainage Ltd. Company on July 9 discharged more than one million cubic metres of water from West Lake into To Lich River.

A USD800-million project to build a wastewater treatment plant and wastewater collecting drain system for Hanoi’s major rivers, including To Lich River, is at a standstill.

Hanoi is piloting the cleanup of the To Lich river by spraying Redoxy3C inoculant at the section of Nguyen Dinh Hoan street and Khuong Dinh bridge.

Nguyen Thi Hoa, a resident living on Hoang Quoc Viet Street, is enjoying a rare reprieve from the rotten smell that has plagued the neighbourhood for decades.

A Japanese cleaning nano-technology has helped reduce the bad smell from the polluted To Lich River in Hanoi, according to online newspaper toquoc.vn.vn.

Hanoi Sewage and Drainage Ltd. Company are seeking permission to build a pumping station to take water from the Red River into West Lake and the To Lich River.

Tadashi Yamamura, UN environmental expert and President of the Japan Environment and Trade Promotion Organisation, said they would start a pilot programme to clean a part of Hanoi's To Lich River.

VietNamNet Bridge - It is technologically but economically unfeasible to clean “black” rivers in Hanoi, scientists say. 

VietNamNet Bridge - Hanoi authorities have once again shown their strong determination to treat the polluted To Lich River after many failed treatment campaigns. 

 VietNamNet Bridge - Hanoi used to be surrounded by romantic rivers, but now the heavily polluted rivers are threatening the lives and health of people.

 VietNamNet Bridge – Ha Noi authorities have installed aquatic rafts on To Lich River to help revive one of the most polluted rivers in the country.