46362-002: Angat Water Transmission Improvement Project | Asian Development Bank

Philippines: Angat Water Transmission Improvement Project

Sovereign (Public) Project | 46362-002 Status: Active

The Asian Development Bank is working with the Philippines to modernize Manila's water supply and reduce the risk of water shortages as demand for water rises in tandem with the city's booming population.

Project Details

Project Officer
van Klaveren, Paulus B. Southeast Asia Department Request for information
  • Philippines
  • Loan
  • Water and other urban infrastructure and services
Project Name Angat Water Transmission Improvement Project
Project Number 46362-002
Country Philippines
Project Status Active
Project Type / Modality of Assistance Loan
Source of Funding / Amount
Loan 3377-PHI: Angat Water Transmission Improvement Project
Ordinary capital resources US$ 123.30 million
Strategic Agendas Environmentally sustainable growth
Inclusive economic growth
Drivers of Change Gender Equity and Mainstreaming
Governance and capacity development
Private sector development
Sector / Subsector

Water and other urban infrastructure and services / Urban water supply

Gender Equity and Mainstreaming Some gender elements
Description The Project will secure raw water supply to the 13 million inhabitants of Metropolitan Waterworks and Sewerage System (MWSS) service area, through the rehabilitation of the Angat transmission line. It is estimated that currently each day about 800,000 cubic meter (m3) or 20% of the total potential capacity of raw water is lost due to leakage of the aqueducts. The main components of the Angat transmission line are as old as 50 years, in poor condition, and not in compliance with structural and seismic requirements, risking the partial interruption of Metro Manila's water supply. The proposed financing modality is a Project loan.
Project Rationale and Linkage to Country/Regional Strategy

Provision of water supply and sanitation in Metro Manila (Manila) is the responsibility of MWSS, a government-owned corporation. In 1997, it awarded two concession contracts to private firms for water distribution. MWSS retained responsibility for bulk water supply. The privatization of the distribution services brought about significant improvements in the delivery of water supply services. The serviced population has doubled since 1997, of which more than 90% have 24 hours access. The nonrevenue water level (NRW) of over 60% in 2002 currently ranges from 10 to 40%. MWSS's capacity to fulfill its responsibility of ensuring and securing the availability of raw water to the concessionaries needs to be strengthened by: (i) rehabilitation of the raw water transmission system; and (ii) adopting a comprehensive water safety, risk- and asset management system.

Rehabilitation works. Manila's main water supply source is the Angat reservoir, which provides about 97% of Manila's water supply. Water from the reservoir is conveyed through a system of tunnels and aqueducts to water treatment plants in Manila. The treated water is then distributed to households, businesses, and industries in Manila, and parts of Cavite and Rizal.

The demand on the Angat water source is about 4.48 million cubic meter per day (m3/day), and is slightly decreasing from 2010 to 2015, as a result from the very successful NRW reduction programs of the concessionaires. However, following 2015, the demand will increase rapidly due to expected water supply area expansion and population growth. The demand is expected to increase by 38% in 2025 to 6.16 million m3/day.

Impact The impact of the project is aligned with MWSS's strategy to provide sustained and secured water supply to Metro Manila from the Angat reservoir, through the Umiray Angat Ipo transmission system.
Project Outcome
Description of Outcome Tunnel from Ipo dam to Bigte settling basins operational
Progress Toward Outcome
Implementation Progress
Description of Project Outputs

New tunnel constructed

Contract management and capacity building support provided

Status of Implementation Progress (Outputs, Activities, and Issues)
Geographical Location Nation-wide, National Capital Region
Safeguard Categories
Environment B
Involuntary Resettlement C
Indigenous Peoples B
Summary of Environmental and Social Aspects
Environmental Aspects
Involuntary Resettlement
Indigenous Peoples
Stakeholder Communication, Participation, and Consultation
During Project Design
During Project Implementation The executing agency is MWSS. Project implementation assistance will be provided through a consultancy contract with a firm. The consultants will be engaged by MWSS in accordance with the Guidelines on the Use of Consultants (2010, as amended from time to time). Equipment and works will be procured in accordance with ADB's Procurement Guidelines (2010, as amended from time to time). The requirement for advance action and retroactive financing for consultants' recruitment will be assessed during loan appraisal.
Responsible ADB Officer van Klaveren, Paulus B.
Responsible ADB Department Southeast Asia Department
Responsible ADB Division Urban Development and Water Division, SERD
Executing Agencies
Metropolitan Waterworks and Sewerage System
[email protected]
4th Floor, Administration Bldg.,
MWSS Complex, Katipunan Road, Balara
Quezon City 1105, Philippines
Concept Clearance 13 Sep 2012
Fact Finding 08 Aug 2013 to 20 Sep 2013
MRM 05 Aug 2014
Approval 18 Mar 2016
Last Review Mission -
Last PDS Update 25 Oct 2016

Loan 3377-PHI

Approval Signing Date Effectivity Date Closing
Original Revised Actual
18 Mar 2016 27 May 2016 26 Oct 2016 30 Jun 2022 - -
Financing Plan Loan Utilization
Total (Amount in US$ million) Date ADB Others Net Percentage
Project Cost 134.00 Cumulative Contract Awards
ADB 123.30 18 Mar 2016 63.08 0.00 51%
Counterpart 10.70 Cumulative Disbursements
Cofinancing 0.00 18 Mar 2016 11.26 0.00 9%

Project Data Sheets (PDS) contain summary information on the project or program. Because the PDS is a work in progress, some information may not be included in its initial version but will be added as it becomes available. Information about proposed projects is tentative and indicative.

The Public Communications Policy (PCP) recognizes that transparency and accountability are essential to development effectiveness. It establishes the disclosure requirements for documents and information ADB produces or requires to be produced.

The Accountability Mechanism provides a forum where people adversely affected by ADB-assisted projects can voice and seek solutions to their problems and report alleged noncompliance of ADB's operational policies and procedures.

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Safeguard Documents See also: Safeguards

Safeguard documents provided at the time of project/facility approval may also be found in the list of linked documents provided with the Report and Recommendation of the President.

Title Document Type Document Date
Angat Water Transmission Improvement Project Initial Environmental Examination Jul 2014
Angat Water Transmission Improvement Project Safeguards Due Diligence Reports Jul 2014
Angat Water Transmission Improvement Project Indigenous Peoples Plans/Indigenous Peoples Development Plans Mar 2014

Evaluation Documents See also: Independent Evaluation

None currently available.

Related Publications

None currently available.

The Public Communications Policy (PCP) establishes the disclosure requirements for documents and information ADB produces or requires to be produced in its operations to facilitate stakeholder participation in ADB's decision-making. For more information, refer to the Safeguard Policy Statement, Operations Manual F1, and Operations Manual L3.

Requests for information may also be directed to the InfoUnit.


Tender Title Type Status Posting Date Deadline
PHI: Angat Water Transmission Improvement Project Advance Notice Archived 16 Sep 2013

Contracts Awarded

No contracts awarded for this project were found

Procurement Plan