Manila Water's Tunnel Boring Machine breaks through at La Mesa Reservoir

PROJECT BREAKTHROUGH: The Tunnel Boring Machine (TBM) named "Dalisay" used to construct the Novaliches-Balara Aqueduct 4 (NBAQ4) has completed its work as it emerged at the La Mesa Reservoir in August 2021.
Launched at the Balara Treatment Plant 2 in January 2020, the TBM bored a 7.3-kilometer long, 3.1-meter diameter tunnel underneath Commonwealth Avenue in Quezon City without hampering the flow of traffic. This project is the first in Metro Manila to use this technology.
Once completed in June 2022, the NBAQ4 will help ensure continuous water supply for more than 7 million customers in the East Zone concession area of the MWSS in Metro Manila and Rizal Province.