In a significant move to bolster Mumbai's water infrastructure, the Brihanmumbai Municipal Corporation (BMC) is poised to commence excavation work for its ambitious underground water tunnel project this July. This critical initiative will connect Kasheli in the Thane district to Mulund in north Mumbai's eastern suburbs, marking a pivotal step in the city's efforts to secure its water supply assets.
Project Overview and Strategic Importance
The 7.1-kilometer-long water supply tunnel is designed to transport water from the Bhatsa dams, which are among the seven key lakes providing potable water to Mumbai. Once operational, this tunnel will serve as the primary conduit for water distribution, with the existing network of surface pipelines being relegated to a backup role. This strategic shift aims to mitigate risks associated with ground-level pipelines, which are vulnerable to damage and disruptions.
Site Inspection and Preparatory Work
On Sunday morning, Mumbai's Municipal Commissioner and state-appointed administrator, Bhushan Gagrani, conducted a thorough site visit to assess the project's progress. Officials revealed that a 134-meter launching shaft is currently under construction at Mulund. Upon completion of this shaft, excavation will begin using a Tunnel Boring Machine (TBM), a state-of-the-art technology that ensures precision and efficiency in underground construction.
Enhancing Water Security and Infrastructure
The Kasheli-Mulund water tunnel project is not merely about augmenting water supply; its core objective is to fortify Mumbai's water security. Senior officials emphasized that while the tunnel will marginally increase water availability, its primary function is to safeguard the city's water-supply assets. "As of now, the pipelines are on the ground, which poses a significant risk. Once this project is complete, we intend to utilize the tunnel for primary water supply, while maintaining the pipelines as a reliable backup," an official stated.
This initiative aligns with broader infrastructure developments, including the ongoing widening of the Mumbai-Nashik highway, and underscores the BMC's commitment to providing an alternative to surface water pipelines. The official added, "A city must always have a contingency plan. Without such backups, the entire urban area faces the peril of water supply cuts in the event of unforeseen circumstances, such as pipeline damage."
Project Timeline and Historical Context
The tenders for this groundbreaking project were floated in 2024, following which preliminary groundwork commenced. The BMC has established a stringent deadline, targeting completion by 2030. This timeline reflects the corporation's dedication to timely execution while ensuring the highest standards of engineering and safety.
By integrating advanced tunneling technology and strategic planning, the Kasheli-Mulund water tunnel project represents a forward-thinking approach to urban water management. It promises to enhance Mumbai's resilience against water-related challenges, ensuring a sustainable and secure water supply for its burgeoning population.
