MWSS BOARD OF TRUSTEES 
Name (Click name to view resume)PositionsContact Number
Elpidio J. VegaChairperson MWSS Board of Trustee8929-5551
Leonor C. CleofasMWSS Administrator/Vice Chairperson MWSS Board of Trustee8922-2969
Melchior I. Acosta Jr.Board of Trustee8929-5551
Mariano C. AlegarbesBoard of Trustee8929-5551
Merly M. CruzBoard of Trustee8929-5551
Jose R. HernandezBoard of Trustee8929-5551
Atty. Melanie Sia-Lambino MBEBoard of Trustee8929-5551
Rogelio V. QuevedoBoard of Trustee8929-5551
Darlina T. UyBoard of Trustee8929-5551
 

MWSS BOARD COMMITTEES
CommitteeMemberPosition
Executive and Governance
Committee (EGC)
Elpidio J. VegaChair
Leonor C. CleofasVice-Chair
Jose R. HernandezMember
Merly M. CruzMember
Melanie Sia-LambinoMember
Rogelio V. QuevedoMember
Audit and Risk Managament
Committee (ARMC)
Mariano C. AlegarbesChair
Jose R. HernandezMember
Elpidio J. VegaMember
Leonor C. CleofasMember
Melchior I. Acosta Jr.Member
Merly M. CruzMember
Melanie Sia-LambinoMember
Darlina T. Uy
Human Resource
Committee (HRC)
Melanie Sia-LambinoChair
Merly M. CruzMember
Mariano C. AlegarbesMember
Elpidio J. Vega
Darlina T. UyMember
Rogelio V. QuevedoMember
Concession Monitoring
Committee (CMC)
Melchior I. Acosta Jr.Chair
Jose R. HernandezMember
Leonor C. CleofasMember
Mariano C. AlegarbesMember
Rogelio V. QuevedoMember
Darlina T. UyMember
Board Committee Membership 2019
Board Committee Membership 2018
Board Committee Membership 2017

MWSS REGULATORY OFFICE OFFICIALS
Name / PositionContact NumberGovMail (@ro.mwss.gov.ph)
Patrick Lester N. Ty
Chief Regulator
3435-8900patrick.ty
Evelyn B. Agustin
Deputy Administrator for Technical Regulation
3435-8904
evelyn.agustin
Lee Robert M. Britanico
Deputy Administrator for Customer Service Regulation
3435-8903leerobert.britanico
Claudine B. Orocio-Isorena
Deputy Administrator for Administration and Legal Affairs
3435-8902claudine.isorena
Christopher D. Chuegan
Acting Deputy Administrator for Financial Regulation
3435-8901christopher.chuegan
Joan Michelle S. Antonio
Dept. Manager A – Public Information Dept.(OCR)
3435-8900joanmichelle.antonio
Crescenciano B. Minas Jr.
Dept. Manager A – Legal (ALA)
3435-8898crescenciano.minas
Ramon A. Javier
Dept. Manager A – Administration (ALA)
3435-8898ramon.javier
Joel A. Dominguez
Dept. Manager A – Operations Monitoring (TRA)
3435-8904joel.dominguez
Maricris T. Laciste
Dept. Manager A – Water Quality Control (TRA
3435-8904maricris.laciste
Rosendo O. Alegre
Dept. Manager A – Complaints Services Monitoring (CSR)
3435-8903rosendo.alegre
Francis Ayapana
Acting Dept. Manager A – Metering Efficiency (CSR)
3435-8903francis.ayapana
Joriel Dagsa
Acting Dept. Manager A – Financial Audit and Asset Monitoring (FRA)
3435-8901joriel.dagsa
Mark Billy Antonio
Acting Dept. Manager A-Tariff Control And Monitoring (FRA)
3435-8901markbilly.antonio