Greater Colombo Water and Wastewater Management Improvement Investment Program (Tranche 3) (ADB-45148-008)

  • Sri Lanka
Geographic location where the impacts of the investment may be experienced.
Financial Institutions
  • Asian Development Bank (ADB)
  • European Investment Bank (EIB)
International, regional and national development finance institutions. Many of these banks have a public interest mission, such as poverty reduction.
Project Status
Stage of the project cycle. Stages vary by development bank and can include: pending, approval, implementation, and closed or completed.
Bank Risk Rating
Environmental and social categorization assessed by the development bank as a measure of the planned project’s environmental and social impacts. A higher risk rating may require more due diligence to limit or avoid harm to people and the environment. For example, "A" or "B" are risk categories where "A" represents the highest amount of risk. Results will include projects that specifically recorded a rating, all other projects are marked ‘U’ for "Undisclosed."
Voting Date
Dec 8, 2015
Date when project documentation and funding is reviewed by the Board for consideration and approval. Some development banks will state a "board date" or "decision date." When funding approval is obtained, the legal documents are accepted and signed, the implementation phase begins.
  • Finance
  • Water and Sanitation
The service or industry focus of the investment. A project can have several sectors.
Investment Type(s)
The categories of the bank investment: loan, grant, guarantee, technical assistance, advisory services, equity and fund.
Investment Amount (USD)
$ 128.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Primary Source

Original disclosure @ ADB website

Updated in EWS Jul 3, 2020

Disclosed by Bank Sep 23, 2016

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Project Description
If provided by the financial institution, the Early Warning System Team writes a short summary describing the purported development objective of the project and project components. Review the complete project documentation for a detailed description.


ADB and the Government of Sri Lanka are working together to improve water and wastewater management services in and around the capital city of Colombo. The Greater Colombo Water and Wastewater Management Improvement Investment Program (Tranche 3) is improving the efficiency and financial sustainability of water supply and wastewater services in Colombo. This includes rehabilitating the city's water supply network and reducing the amount of water that is leaked or distributed without payment. The project is rehabilitating and expanding the city's wastewater system and constructing a wastewater treatment. This is improving the quality of life for tens of thousands of residents in the greater Colombo area, including women and the poor, who will have more time for productive activities because of 24-hour water supply.


About 95% of Colombo, Sri Lanka's capital city and economic and administrative hub, is covered by a piped water supply system. Because the system has low and fluctuating water pressure and intermittent supply, some areas of the city receive water only during off-peak hours and others receive water for an average of only 6 to 10 hours a day. Many parts of the distribution network were built more than 100 years ago. About half the water in the system is lost without earning revenue to maintain the system. About 60% of the population in Colombo is connected to the sewer system, which is in poor condition and frequently blocked. About one third of the pumping facilities are not working and this causes overflows. Currently, wastewater is discharged without treatment into the sea.


improved water supply and wastewater service and management in Greater Colombo aligned with the Vision for a New Sri Lanka, 2010-2020.


All consultants will be recruited according to ADB's Guidelines on the Use of Consultants (2013, as amended from time to time). It is estimated that the total consulting inputs under Project 3 will be 1131 person months (5 international, and 1126 national).


All procurement of goods and works will be undertaken in accordance with ADB's Procurement Guidelines (2015, as amended from time to time). The executing agencies and implementing agencies for Project 3, with assistance from consultants, have prepared the bid documents for the sewer networks and the bidding is ongoing. The Design-Build-Operation (DBO) bidding document for wastewater treatment plant is being finalized and bidding will start soon.

Investment Description
Here you can find a list of individual development financial institutions that finance the project.

Loan 3348-SRI: Greater Colombo Water and Wastewater Management Improvement Investment Program - Tranche 3
Ordinary capital resources US$ 123.00 million

Loan 3349-SRI: Greater Colombo Water and Wastewater Management Improvement Investment Program - Tranche 3
Concessional ordinary capital resources / Asian Development Fund US$ 5.00 million

Loan: Greater Colombo Water and Wastewater Management Improvement Investment Program (Project 3)
European Investment Bank US$ 50.00 million

Contact Information
This section aims to support the local communities and local CSO to get to know which stakeholders are involved in a project with their roles and responsibilities. If available, there may be a complaint office for the respective bank which operates independently to receive and determine violations in policy and practice. Independent Accountability Mechanisms receive and respond to complaints. Most Independent Accountability Mechanisms offer two functions for addressing complaints: dispute resolution and compliance review.


The Accountability Mechanism is an independent complaint mechanism and fact-finding body for people who believe they are likely to be, or have been, adversely affected by an Asian Development Bank-financed project. If you submit a complaint to the Accountability Mechanism, they may investigate to assess whether the Asian Development Bank is following its own policies and procedures for preventing harm to people or the environment. You can learn more about the Accountability Mechanism and how to file a complaint at:


Responsible ADB Officer Fan, Mingyuan
Responsible ADB Department South Asia Department
Responsible ADB Division Urban Development and Water Division, SARD
Executing Agencies
Ministry of City Planning and Water Supply
"Lakdiya Medura", No. 35, New Parliament Road, Pelawatta
Ministry of Provincial Councils & Local Government
330 Union Place, Colombo 2
Sri Lanka

How it works

How it works