The Metropolitan Waterworks and Sewerage System (MWSS) celebrates Manila Water’s milestone in its landmark Novaliches-Balara Aqueduct 4 (NBAQ4) project as the tunnel-boring machine (TBM) being utilized for the project has already broken through at the La Mesa Reservoir, more than seven kilometers away from its entry shaft at Balara in Quezon City. The Php5.5B NBAQ4 project, one of the largest MWSS-led water supply infrastructure projects undertaken by Manila Water, entails the construction of a fourth aqueduct from the La Mesa Reservoir to the Balara Treatment Plants (BTP) 1 and 2 to improve the reliability and security of the raw water transmission system.