Inside Northern Vietnam's Largest Wastewater Treatment Plant

After seven years of intense construction and engineering challenges, Northern Vietnam's largest wastewater treatment facility, the Yen Xa Wastewater Treatment Plant, is nearing completion. Located in Hanoi, this monumental infrastructure project represents a critical step forward in the city's environmental conservation efforts and urban development. Designed to address the severe pollution plaguing Hanoi's historic river systems, including the To Lich, Lu, Set, and Nhue rivers, the Yen Xa plant is poised to transform the capital's ecological landscape.

With a massive capacity of 270,000 cubic meters per day, the facility utilizes advanced Japanese technology to treat municipal wastewater before releasing it safely back into the environment. The scope of the project is immense, featuring an extensive network of underground collection pipes stretching over dozens of kilometers beneath the bustling streets of Hanoi. Constructing this system required state-of-the-art pipe-jacking technology to minimize disruption to daily traffic and existing urban infrastructure, making it one of the most complex engineering feats in the country's recent history.

Once fully operational, the Yen Xa Wastewater Treatment Plant will significantly reduce the volume of untreated waste flowing into Hanoi's waterways, effectively reviving 'dead' rivers that have suffered from decades of rapid urbanization. This project not only promises cleaner water and healthier ecosystems but also aims to improve the quality of life for millions of local residents by reducing foul odors and waterborne health risks. Explore our exclusive gallery to see the impressive scale of this modern facility, the advanced machinery inside, and the dedicated workers who made this environmental milestone possible.

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