The inauguration ceremony of Mongolia’s first Advanced Water Purification Plant, constructed under the Mongolia Water Compact signed between the Government of Mongolia and the U.S. Millennium Challenge Corporation (MCC), was held on May 15, 2026, officially commencing the plant’s operations. Under the compact program, the Ulaanbaatar Bulk Water Supply Project, comprised of three strategically interrelated projects, has been implemented to increase the water supply of Ulaanbaatar, the capital city of Mongolia, improve access to water services, and help prevent potential water shortages in the near future.

The Government of Mongolia and the U.S. Millennium Challenge Corporation (MCC) marked the official opening and launch of operations of Mongolia’s first large-scale Wastewater Recycling Plant, built under the Wastewater Recycling Project—one of the three main components of the Mongolia Water Compact. The ceremony took place at the newly built Wastewater Recycling Plant on March 16, 2026.

Construction work on the Wastewater Recycling Plant has been fully completed, and the testing and commissioning phase has officially begun. The plant has started receiving up to 50,000 cubic meters per day of wastewater from the new Central Wastewater Treatment Plant, in compliance with MNS 4943:2015 standards, and has commenced equipment testing operations. The treated water will be recycled and supplied for technical use at combined heat and power plants, specifically for cooling towers and ash removal purposes.

The Millennium Challenge Account-Mongolia (MCA-Mongolia) and the Ulaanbaatar Water Supply and Sewerage Authority (USUG) proudly participated in the 6th Global Water Operators’ Partnerships (WOPs) Congress, organized by UN-Habitat’s Global Water Operators’ Partnerships Alliance (GWOPA) under the theme “Solidarity in Action: Stronger Utilities for Thriving Cities.”

Today, the United States’ and Mongolian governments officially handed over 180 fully automated water kiosks in Ulaanbaatar’s ger areas to the Ulaanbaatar Water Supply and Sewerage Authority (USUG).

MCA-Mongolia now invites eligible firms to submit their Qualification Information for the Consulting Services for Animation Production. Details of the services are provided in the Terms of Reference of the Request of Qualification Information (RQI) Document.

MCA-Mongolia now invites qualified and experienced individual consultants to submit their applications for the Individual Consultant services (Social Media Expert) to support social media management and promotion of MCA-Mongolia.

MCA-Mongolia now invites eligible firms to submit their Qualification Information for provision of Consulting Services for a Visual Campaign to Enhance Public Understanding of the True Costs of Water Services.

The Ulaanbaatar City Mayor’s Office and the Ulaanbaatar Water Supply and Sewerage Authority (USUG) organized a meeting-discussion on “The Current State of the Central Wastewater Treatment Plant and the Construction of the New Treatment Plant” at the Khangardi Palace on August 19, 2025.

The Government of the United States concluded its foreign assistance review and reaffirmed its decision to continue funding the Mongolia Water Compact, a $462 million investment in water security and economу, signed between the Government of Mongolia and the U.S. Millennium Challenge Corporation (MCC).