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Construction of the “Tuul-1” collector, the main wastewater transmission line connecting Ulaanbaatar to the central sewer system, began last year after being stalled for 20 years. As of today, the project is 25% complete.
Once the “Tuul-1” collector becomes fully operational, wastewater from ger districts will be treated and disposed of in accordance with standards, while open sewage discharge and soil pollution are expected to decrease. In addition, ger districts such as Uliastai, Sharkhad, Amgalan, Dambadarjaa, Dari-Ekh, and Chingeltei will be connected to engineering infrastructure, creating opportunities for further construction and urban development.
L.Altangerel, head of the Urban Engineering Infrastructure Department of the UB service and Chief engineer, said: “The Tuul-1 collector project was first initiated in 2007 by order of the Ministry of Construction. In 2025, the capital city governor and the City Council approved the required funding, and the Water Supply and Sewerage Administration is now implementing the project.”
He noted that this is the largest main wastewater pipeline built in Ulaanbaatar since 1980. The 30-km pipeline, with a diameter of 1,500 mm, will run from Gachuurt to the Central Treatment Plant. “It will eliminate wastewater discharge from ger districts, create conditions for construction, and improve living conditions,” he said.
B.Tamir, a technician at the Water Supply and Sewerage Authority, said construction of the main line has been underway since October, 2025. “This year, we plan to install six kilometers of pipeline. Currently, three teams are working on the project,” he said.
Construction of the “Tuul-1” collector, the main wastewater transmission line connecting Ulaanbaatar to the central sewer system, began last year after being stalled for 20 years. As of today, the project is 25% complete.
Once the “Tuul-1” collector becomes fully operational, wastewater from ger districts will be treated and disposed of in accordance with standards, while open sewage discharge and soil pollution are expected to decrease. In addition, ger districts such as Uliastai, Sharkhad, Amgalan, Dambadarjaa, Dari-Ekh, and Chingeltei will be connected to engineering infrastructure, creating opportunities for further construction and urban development.
L.Altangerel, head of the Urban Engineering Infrastructure Department of the UB service and Chief engineer, said: “The Tuul-1 collector project was first initiated in 2007 by order of the Ministry of Construction. In 2025, the capital city governor and the City Council approved the required funding, and the Water Supply and Sewerage Administration is now implementing the project.”
He noted that this is the largest main wastewater pipeline built in Ulaanbaatar since 1980. The 30-km pipeline, with a diameter of 1,500 mm, will run from Gachuurt to the Central Treatment Plant. “It will eliminate wastewater discharge from ger districts, create conditions for construction, and improve living conditions,” he said.
B.Tamir, a technician at the Water Supply and Sewerage Authority, said construction of the main line has been underway since October, 2025. “This year, we plan to install six kilometers of pipeline. Currently, three teams are working on the project,” he said.