Manila Water has recently started operating additional 26 deepwells in its concession area. As of May 20, 2019, more than 34 million liters of water per day (MLD) have been drawn from these deepwells and is seen to bring more water supply upon full operation of more deepwells in the coming months.

Before the activation of the new deepwells, Manila Water is able to source more than 9 MLD from five (5) deepwells located in Curayao, Rodriguez. On top of this, deepwells from the Province of Rizal now collectively yield an additional 25 MLD. There are now nineteen (19) additional deep wells in operation in the Province of Rizal, nine (9) of which are in Antipolo City.

The current demand of Manila Water customers is about 150 MLD in excess of the available supply from its allocation of 1600 million liters from Angat Dam. To narrow the supply deficit, various sources have been identified to augment supply. Aside from the deepwells, additional supply is coming from the Cardona Water Treatment Plant which now delivers 50-56 MLD while cross-border flows now provide 18.81 MLD.

As of May 20, water availability has already reached 99% of East Zone customers receiving 8 hours or more of water service with 7 psi (pound per square inch) of pressure, reaching up to the ground floor, which is compliant with the regulatory standards as set in the Concession Agreement. However, despite these augmentation sources, there is still a supply deficit of about 50 MLD due to higher summer demand and soaring temperature.