The CMWSSB Water Sewerage Work (Package 1) is a major water transmission infrastructure project planned across Chennai to strengthen the city’s water sewerage & distribution network through an integrated Ring Main System.
Project Overview:
Chennai Metropolitan Water Supply and Sewerage Board (CMWSSB) is undertaking Package 1 of the Chennai Ring Main System project to strengthen the city’s water supply infrastructure. Moreover, the project carries an estimated construction cost of 1,565 INR-Crore. CMWSSB commenced the project in 2026 and plans to complete it by 2030.
The Chennai water sewerage project involves the construction of a comprehensive water transmission network. It further comprises the supply and laying of 96,905 M of SAW Mild Steel (MS) pipelines and 51,442 M of Ductile Iron (DI K9) pipelines. Simultaneously it also includes 930 valves, reinforced concrete chambers, underground storage tanks, overhead tanks, and RCC surge tanks. The scope also includes the installation of vertical turbine pump sets, multiple DG sets, cement concrete works, CRS steel, pumping infrastructure, and associated electrical, mechanical, and instrumentation systems.
The project forms part of Chennai’s Ring Main System, which will also interconnect major Water Treatment Plants (WTPs), Desalination Plants (DSPs), and Water Distribution Stations (WDSs). The project will enable authorities to reroute water across the city during emergencies, maintenance activities, or localized shortages. It will also improve operational reliability and pressure management.
Meanwhile, GKC Projects Limited, VA Tech Wabag Limited, and Sri Venkatachalapathy Construction Private Limited are appointed as the general turnkey contractors to execute Package 1.
Recent Updates:
The project is currently in the pre-construction stage. As of July 2026, preparatory activities are underway, and construction is expected to commence within the next three to four months.
Project details:
| Name of the Project | CMWSSB Water Sewerage Work, Chennai City (Package 1) |
| Latest Status | Pre-Construction Contractor – Appointed Status update : As of July 2026, the project is in the initial stage, and the project work is expected to commence in approximately 3 to 4 months. |
| Location | Chennai |
| Construction Cost (INR-Crore) | 1,565 |
| Description | The project involves construction of :- Supply SAW MS pipes – 96,905 M Supply of DI K9 pipes – 51,442 M Supply of valves – 930 Nos Construction of RCC chamber Laying of Cement Concrete – 51,306 Cum Supply of CRS steel – 1,193 MT Supply of vertical turbine pump set Supply of DG set – 200 KVA 3 Nos Supply of DG set – 750 KVA 2 Nos Supply of DG set – 100 KVA Supply of DG set – 500 KVA 2 Nos Supply of DG set – 1000 KVA Construction of underground storage tanks Construction of Overhead tank Construction of RCC surge Tank |
| Building use | Water & Sewerage Pipelines |
| Sector | Public |
| Construction start (Tentative) | 2026 |
| Project completion (Estimated timeline) | 2030 |
ABOUT
Chennai Metropolitan Water Supply and Sewerage Board
Established in 1978 under the Chennai Metropolitan Water Supply and Sewerage Act, CMWSSB is the statutory authority responsible for water supply and sewerage services across the Greater Chennai Corporation area. The organization plans, develops, operates, and maintains the city’s water supply, wastewater, and sewerage infrastructure while implementing major urban water management projects.
Headquartered in Hyderabad, GKC Projects Limited is an infrastructure construction company with over four decades of experience. The company executes large-scale water supply, irrigation, transportation, industrial, and urban infrastructure projects. Additionally, it undertakes EPC contracts across public infrastructure sectors throughout India.
Based in Chennai, VA Tech Wabag Limited is a multinational water technology company specializing in water treatment and wastewater management solutions. Moreover, the company designs, builds, and operates drinking water, desalination, sewage treatment, and industrial water recycling facilities across India and international markets. Furthermore, it is one of the leading players in the global water infrastructure sector.
Sri Venkatachalapathy Construction Private Limited
Operating from Tamil Nadu, Sri Venkatachalapathy Construction Private Limited is engaged in civil engineering and infrastructure construction. The company also undertakes water supply, sewerage, pipeline, road, and public infrastructure projects. Moreover, it executes turnkey civil works for government agencies and urban infrastructure developments.
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Disclaimer: The information in this article is gathered using data from Biltrax Construction Data’s proprietary platform. This article uses feature images that may not represent the project. However, they are merely for illustration purposes.
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