MANILA, Philippines — Moving aggressively to modernize the East Zone’s sanitization infrastructure, the region’s private water concessionaire is picking up the pace on a major environmental network expansion. Manila Water is accelerating construction on the Batasan–Balara Flow Diversion Project to clean up urban waterways and protect public health across Quezon City and Marikina.
The engineering development is designed to intercept untreated household wastewater from dense urban pockets and redirect it straight to specialized, high-capacity centralized processing facilities.
The primary objective of the flow diversion system is to prevent raw residential sewage from seeping into local tributaries. The operational architecture relies on two newly integrated technical components to route the area’s waste streams:
Beyond direct local hygiene benefits, the multi-million peso infrastructure rollout serves as a critical compliance mechanism for federal environmental directives:
The Batasan-Balara acceleration fits into the concessionaire’s wider long-term strategy to expand its utility networks and reduce dependency on traditional water sources.
| Active Capital Expenditure Project | Primary Engineering Operational Focus | Long-Term Community & Structural Impact |
| Upper Wawa Dam Takeover | Managing massive new upstream reservoirs in Rizal province to supply an extra 710 million liters per day. | Successfully reduces the East Zone’s heavy structural reliance on Angat Dam during dry peak summer seasons. |
| Marikina North Facility | Utilizing advanced Biological Nutrient Removal (BNR) parameters to extract dangerous nitrogen and phosphorus. | Guarantees that handled urban wastewater discharged back into major public rivers is completely safe for local aquatic life. |
| East Zone Desludging Caravan | Deploying fleets of vacuum trucks across 65 barangays to clean household septic tanks at zero added cost. | Lowers the overall pollution load in urban creeks while directly supporting United Nations Sustainable Development Goals (SDG 6). |
“These wastewater system improvements support the shared goal of rehabilitating Manila Bay, while reflecting Manila Water’s responsibility to protect the environment and provide quality sanitation services to the communities we serve,” stated Dittie Galang, Corporate Communications Affairs Group head of Manila Water.
The acceleration of the Batasan–Balara Flow Diversion Project marks a major step forward in addressing Metro Manila’s long-standing urban waste challenges. By building specialized lift stations and running deep-river pipelines to connect 5,700 new homes to the Marikina North processing facility, Manila Water is successfully preventing raw sewage from entering fragile local river systems. This proactive work ensures the utility company satisfies strict Supreme Court clean-up mandates while directly protecting communities from waterborne health risks. As engineering teams push past the 90 percent completion mark on the remaining pipelines this quarter, the project establishes a modern standard for sustainable, climate-resilient water infrastructure across Quezon City and Marikina throughout 2026.