Chennai water infrastructure is set for a major upgrade. The Government of India and the Asian Development Bank (ADB) have signed a $230 million loan agreement to modernise the city’s water systems and expand sanitation services.
The funding will support the Chennai Climate-Resilient Water Security and Sewerage Project. The project aims to improve access to safe and reliable water and sanitation services across the city. It will also strengthen Chennai’s ability to withstand climate-related risks.
Saurabh Singh, Deputy Secretary, Department of Economic Affairs, Ministry of Finance, signed the loan documents for the Government of India. Mio Oka, Country Director, India Resident Mission, signed on behalf of ADB.
Chennai Water Infrastructure to Add 170 KM of New Pipes
The project will construct more than 170 km of new water supply and sewer pipelines. It will also upgrade seven water pumping stations and 38 sewer pumping stations.
Performance-based contracts will strengthen water utility assets and operations. This approach aims to improve efficiency and build a more financially sustainable urban water system.
Chennai to Introduce Ring-Main Water System
A key component of the project is a comprehensive ring-main solution. Chennai will become the first Indian city to implement this system.
The closed-loop network will maintain balanced water pressure. It will also improve distribution across service areas.
The system is expected to make water supply more reliable and equitable. It will also strengthen the city’s resilience to natural hazards.
Digital Technology to Transform Water and Sanitation Services
ADB will support the digital transformation of Chennai’s water and sanitation services. The project will introduce real-time monitoring and data-driven decision-making. It will also improve customer responsiveness.
Advanced technologies will help detect sewer blockages faster. This will reduce the need for hazardous manual inspections and improve worker safety.
The project will also prepare distribution networks in at least two Greater Chennai zones for future investments.
Project Supports Climate-Resilient Urban Development
This investment builds on earlier ADB-supported initiatives in Chennai focused on safe water and waste management. The project aligns with the Government of India’s urban development programmes, including AMRUT 2.0 and the Urban Challenge Fund.
The upgrade to Chennai water infrastructure is expected to strengthen the city’s water security and sanitation systems. It will also support climate resilience, public health, and more sustainable management of essential urban services.

