Maynilad Water Holding Company, Inc. is the immediate parent company of Maynilad, with an equity interest of 92.85% as of April 25, 2023. It serves as the holding company of three (3) leading conglomerates, namely, Metro Pacific Investments Corporation (MPIC), DMCI Holdings, Inc. (DMCI) and Marubeni Corporation (Marubeni) (through its subsidiary, MCNK JV Corporation). The ownership structure of Maynilad is shown in the diagram below.

Subsidiaries, Associates, and Joint Ventures

The table below sets forth the Company’s subsidiaries, affiliates and other investments as of 31 December 2023:
ProjectClassificationYear of Incorporation% Owneship
Philippine Hydro, Inc.Subsidiary1999100%
Amayi Water Solutions Inc.Subsidiary2012100%
Subic Water and Sewerage Company, Inc.Affiliate1997100%
Maynilad and its subsidiaries serve customers in the Philippines, and do not source any revenue from foreign sales.

Philippine Hydro, Inc.​

Philippine Hydro, Inc. (“PhilHydro”) became a wholly owned subsidiary of Maynilad on 3 August 2012. Upon acquisition, the new management implemented major financial and operational improvements to boost supply availability and expansion in its served areas.

PhilHydro is engaged in waterworks construction, engineering, and engineering consulting services.  It is currently undertaking water supply projects outside Metro Manila in line with Presidential Decree No. 198, otherwise known as the “Provincial Water Utilities Act of 1973”, which mandates local government units to create and operate local water utilities and provide potable water to the public.

It owns and operates four WTP that supply treated bulk water to the Legazpi City Water District in Albay, Norzagaray Water District, Santa Maria Water District in Bulacan, and, starting March 2017, Bocaue Water District in Bulacan; and municipal waterworks of Bambang, Nueva Vizcaya. PhilHydro also owns and operates the treated water supply and distribution system of Rizal, Nueva Ecija. All PhilHydro WTPs are under Public-Private Partnership (“PPP”) Contracts with the government, either directly contracting the Local Government Unit or with Government-Owned and Controlled Corporations, such as Water Districts. PhilHydro has a total plant capacity of 61 MLD.

PhilHydro’s billed volumes increased 4.0% to 49.3 MLD versus 47.4 MLD at the end of 2022, driven primarily by growths from NORWD and INC both of which have been performing exceedingly well since loosening of restrictions and resumption of events. Bulacan’s overall performance would have been better had the deterioration of SMWD’s filtration media been resolved sooner. Also lagging is the billed volume performance of operations in Bambang, Nueva Vizcaya due to Bambang Waterworks’ intensified mitigation of NRW on its distribution lines and service disconnection of nonpaying customers. As of 31 December 2023, PhilHydro generated revenues of ₱259 million while contribution to Maynilad after amortization of goodwill from acquisition was ₱64 million to core EBITDA.

The following sets forth a summary of PhilHydro’s contracts and service areas:

ClientService AreaType of ServiceContracted YearsContracted Volume
Legazpi City Water DistrictLegazpi City, AlbayBulk Water Supply2007 - 203220-50 MLD
Norzagaray Water DistrictMunicipality of Norzagaray, BulacanBulk Water Supply2009-20331 -10 MLD
Bambang, Nueva Viscaya Water DistrictMunicipality of Bambang, Nueva EcijaBulk Water Supply2009-20331.5 MLD
Sta. Maria Water DistrictMunicipality of Sta. Maria, BulacanBulk Water Supply2010 - 20344-30 MLD
Residents of Rizal, Nueva EcijaMunicipality of Rizal, Nueva EcijaBulk Water Supply2010 - 20342.5 MLD
New Era UniversityCiudad de Victoria, Bocaue, BulacanBulk Water Supply2014 - 20332-10 MLD
Bocaue Water DistrictMunicipality of Bocaue, BulacanBulk Water Supply2017 - 20272 MLD

Amayi Water Solutions Inc.

Amayi Water Solutions, Inc., doing business under the trade name, “Maynilad BOAC,” (hereafter, “Maynilad BOAC”),  a wholly owned subsidiary of Maynilad incorporated in the Philippines on 18 July 2012, is engaged in the distribution of water in Boac, Marinduque (outside West Service Area). Maynilad BOAC was incorporated for the purpose of operating, managing, maintaining and rehabilitating waterworks, wastewater and sanitation system and services outside the concession area.

On 19 February 2019, Maynilad BOAC entered into a 25-year Concession Agreement with the Municipality of Boac, Marinduque. The Concession Agreement covers financing, rehabilitation, development, expansion, improvement, operation, and maintenance of the water supply system in the 41 barangays of the Municipality of Boac.

Maynilad BOAC plans to implement capital expenditure projects focusing on the rehabilitation and expansion of the current water system in the said municipality. The existing pipelines, which covers 24% of the service area, will be replaced with new pipes of higher capacity designed to accommodate the increasing demand in the area.

Maynilad BOAC will also lay new pipelines that will enable it to expand services in 15 barangays, thus increasing the service coverage in the area to 76%. A total of 77 kilometers of pipelines will be laid after the rehabilitation and expansion program.

To cater to the future demand of the municipality, Maynilad BOAC will also increase its water supply capacity to almost 17 MLD. This will be done through the rehabilitation of two existing deep wells and the construction of eight new deep wells.

The concession agreement shall be effective for a period of 25 years beginning on the commencement date.


As of 31 December 2023, Maynilad BOAC’s commercial operations have not yet started, and operations from the local government unit to Maynilad BOAC has recently been turned over on 23 January 2024.

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