Sumag (2)

Project Description:

Construction of a diversion tunnel to supplement the water coming from Umiray River going to the Angat Reservoir.

  • This Project is being implemented and funded by the Common Purpose Facility (CPF) Office of the two Concessionaires (Manila Water and Maynilad)


Umiray, General Nakar, Quezon

Project Cost:

Php 774 Million

Funding Source:

CPF Funding

Status:  (as of 31 December 2016)

  • Construction works was temporarily suspended due to the incident that happened (re: cofferdam had collapsed on 13 August 2016 resulting to the death of 6 workers).
  • Actual physical accomplishment to date is 67.79%; proposed time extension no. 2 is in process.


Set to Provide Short-term Additional Water


This is originally part of the Umiray-Angat Transbasin Project but was temporarily deferred during the construction of the transbasin tunnel. Considering the need to augment the raw water supply in the Angat Reservoir, now is the time to proceed with the construction of this Sumag River Diversion Works intended to divert raw water from the Sumag River through the existing transbasin tunnel with an estimated volume of 188 million liters per day (188mld).

The Project, which was being funded by the two (2) Concessionaires through the Common Purpose Facility (CPF) Office, was already bidded-out and the contract negotiation with the winning bidder is on-going.