Manila Water Company, Inc. is the East Zone concessionaire of the Metropolitan Waterworks and Sewerage System and is responsible for bringing potable water, sewerage, and sanitation services to over six million customers in the eastern portion of Metro Manila and Rizal province. It is a publicly-listed company and a subsidiary of Ayala Corporation.

Operating under a 40-year concession agreement with the Philippine government since 1997, Manila Water puts a premium on customer service and sustainable development. Its mission is anchored on helping build the communities it serves, especially low-income communities, and protecting the environment.

Through the years, Manila Water has expanded its operations and ventured into major cities and provinces outside Metro Manila and in the Asia-Pacific region. It has brought its expertise and experience to the rest of the country and the region through its local subsidiaries such as Laguna Province, Boracay Island, Clark Special Economic Zone, Cebu Province, Zamboanga City, and Tagum City, Davao del Norte. Moreover, Manila Water has established management contracts and investments internationally, and continues to explore projects, in Vietnam, Myanmar and Indonesia.