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The Government of India and the Asian Development Bank signed a $230 million loan to modernise and expand Chennai's water supply and sanitation infrastructure.
The money funds the Chennai Climate-Resilient Water Security and Sewerage Project, which will lay over 170 km of water supply and sewer pipes and upgrade seven water pumping stations and 38 sewer pumping stations.
Chennai will become the first Indian city to implement a comprehensive ring-main solution - a closed-loop system that keeps water pressure balanced across service areas.
The loan was signed for India by Shri Saurabh Singh, Deputy Secretary, Department of Economic Affairs, Ministry of Finance, and for ADB by Ms. Mio Oka, Country Director, India Resident Mission.
PIB positions the investment alongside AMRUT 2.0 and the Urban Challenge Fund, the two central instruments for urban water and sanitation.
Regional multilateral development bank for Asia and the Pacific, established on 19 December 1966. It is owned by 69 members, 50 of them from the region. Its five largest shareholders as of 31 December 2024 were Japan and the United States (15.6% each), the People's Republic of China (6.4%), India (6.3%) and Australia (5.8%); India is among its largest borrowers.
The nodal department for India's economic engagement with multilateral and bilateral lenders. Sovereign loans from ADB, the World Bank and similar institutions are negotiated and signed by DEA on behalf of the Government of India, not by the line ministry that will use the money.
ADB's country office, which manages the India portfolio and represents the Bank at loan signings; the Chennai loan was signed through this office.
Universal coverage of water supply through functional taps in all statutory towns, and universal sewerage/septage coverage in the 500 cities covered by the first AMRUT.
Key: Launched 1 October 2021 for 2021-22 to 2025-26 under the Ministry of Housing and Urban Affairs; total indicative outlay Rs. 2,99,000 crore, of which the central share is Rs. 76,760 crore; targets 2.68 crore new tap connections in about 4,800 statutory towns and 2.64 crore new sewer connections. It is the vehicle through which Jal Jeevan Mission (Urban), announced in the 2021-22 Union Budget, was actually launched.
Finance 'Cities as Growth Hubs', 'Creative Redevelopment of Cities' and 'Water and Sanitation' proposals, selected in competitive challenge mode.
Key: A Rs. 1 lakh crore fund announced in the Union Budget 2025-26, with Rs. 10,000 crore provided for 2025-26. It finances up to 25% of the cost of a bankable project, on condition that at least 50% comes from bonds, bank loans and public-private partnerships - a shift from grant financing to market-linked financing.
Basic water supply, sewerage, storm-water drainage, urban transport and green space in 500 selected cities.
Key: The predecessor mission whose 500 cities define the sewerage coverage universe of AMRUT 2.0.
Universal functional tap water coverage in urban households, announced in the Union Budget 2021-22 with an announced outlay of Rs. 2,87,000 crore.
Key: It was operationalised as AMRUT 2.0 in October 2021 rather than as a separate mission - unlike the rural Jal Jeevan Mission, which runs independently under the Department of Drinking Water and Sanitation, Ministry of Jal Shakti.
In a conventional branched or radial network, each service area hangs off a single trunk line: pressure falls the further you go from the source, and a break anywhere upstream cuts off everything downstream. A ring main closes the network into loops, so any point can be fed from more than one direction. That equalises pressure between the near and far ends of a zone, lets a damaged segment be isolated without cutting supply to the whole area, and makes it far easier to run a continuous, pressurised system in which leakage can actually be measured. Chennai is set to become the first Indian city to adopt this comprehensively - a distribution-side reform that matters as much as new source augmentation, because losses in Indian urban water systems are mostly in distribution.
Simple Analogy: A branched network is a cul-de-sac; a ring main is a roundabout. If one road is dug up, traffic on a roundabout still reaches every house from the other side.
ADB (1966, Manila) and the World Bank are the long-standing lenders; the newer ones are the New Development Bank (BRICS, 2014, Shanghai) and the Asian Infrastructure Investment Bank (2016, Beijing), in which India is the second-largest shareholder. All of their sovereign loans to India are signed by the Department of Economic Affairs.
The project's aim of eliminating hazardous manual sewer inspections through technology connects directly to the Prohibition of Employment as Manual Scavengers and their Rehabilitation Act, 2013 and to the NAMASTE scheme for mechanised sanitation work.
Urban water and sanitation investment is tracked against Sustainable Development Goal 6 - clean water and sanitation for all - which is also the reference point AMRUT 2.0 uses for universal tap coverage in statutory towns.
GS Paper 2 > International Relations > Important International Institutions, Agencies and Fora
General Awareness > International Financial Institutions
Static GK > International Organisations
ADB features in Prelims and in banking general awareness almost every cycle; urban missions recur in GS Paper 2 governance questions.
A closed-loop water distribution network in which every point can be supplied from more than one direction, keeping pressure balanced and allowing a damaged segment to be isolated without cutting supply.
A project whose revenue stream is predictable enough to service debt, so it can raise money from bonds, bank loans or PPP investors rather than depending entirely on budget grants - the qualifying test for Urban Challenge Fund support.
A contract that pays an operator against measured outcomes - such as reduced water loss or hours of supply - instead of against work done.
ADB's country office in New Delhi, which manages the India portfolio and signs loans on the Bank's behalf.