The Executive Office


Dr. Benjamin E. Antonio, III, Ph.D.

Chief Executive Officer and General Manager

  • Former SBMA Board Director
  • Developmental Environmentalist
  • Wellness Advocate and Entrepreneur
  • Built his career in Education, Management Systems and Information Technology
  • Multi-Sectoral Consultant on Business Management, Quality & Process Engineering, and Information Security & Risk Management
  • BS Science Cum Laude Graduate
  • Master of Business Administration

Top Management Team

Engr. Maria Teresa S. Maranon

Head of Operations 



Marilyn M. Baluyot, CPA

Finance Division Head


Engr. Czarella Odelle B. Bohol

Wastewater Operations Division Head


Leon B. Guinto

Water Supply Operations Division Head

Engr. Maria Rhea B. Hernandez

Commercial Division OIC

Atty. Ritzie Stelette C. Merelos

Integrated Technical Services Division Head

David R. Reyes

Corporate Management Services Division Head

Engr. Bryan S. Rubiano

Engineering and Construction Division Head

Engr. Noel Alfredo G. Tizon

Non-Revenue Water Division Head

Thelma M. Villanuveva

Strategic Initiatives Division Head