MANILA – Households in Metro Manila will face increased water bills starting January 2026, as the Metropolitan Waterworks and Sewerage System Regulatory Office (MWSS-RO) approved tariff adjustments for concessionaires Manila Water and Maynilad. The hikes—part of the fourth tranche of the 2023-2027 rate rebasing period—reflect updates in basic charges, taxes, environmental fees, sewerage costs, and foreign currency differential adjustments (FCDA), aimed at funding infrastructure upgrades and sewer coverage expansion.
MWSS-RO Chief Regulator Patrick Lester Ty explained during a December 15, 2025 briefing that the increases are tied to concessionaires’ performance milestones, particularly Manila Water’s sewer coverage achievements qualifying it for a higher environmental charge (from 25% to 30% of basic charge). “These adjustments ensure continued investments in water supply, sanitation, and environmental protection,” Ty said, assuring no “ghost projects” after audits.
Impact on Monthly Bills (First Quarter 2026 Estimates)
| Concessionaire | Consumption (cu.m./month) | Monthly Increase | New Estimated Bill |
|---|---|---|---|
| Manila Water (East Zone) | 10 or less (regular) | +P29.86 | P283.71 |
| 20 | +P66.25 | P627.54 | |
| 30 | +P135.22 | P1,279.51 | |
| 10 or less (lifeline) | +P4.24 | N/A | |
| Maynilad (West Zone) | 10 or less (regular) | +P5.06 | P187.06 |
| 20 | +P19.06 | P703.31 | |
| 30 | +P39.04 | P1,436.98 | |
| 10 or less (lifeline) | +P1.02 | N/A |
Manila Water’s steeper hikes stem from its environmental charge increase, rewarding sewer expansion progress. Lifeline rates (for low-income households) see minimal impact.
Why the Increases?
- Rebasing Tranche: Fourth installment of 2022-approved staggered adjustments for 2023-2027 capex (e.g., new treatment plants, sewer lines).
- Performance Incentives: Manila Water’s sewer coverage gains trigger higher fees.
- No Overpricing: MWSS-RO verified spending; both firms exceeded 70% of 2023-2025 targets.
Concessionaires spent billions on projects improving supply continuity and wastewater treatment, with MWSS urging eligible families to avail of enhanced lifeline programs for discounts.
For millions relying on these services amid holiday expenses, the hikes add pressure—but regulators frame them as investments in reliable, cleaner water for the future.