Section 4Sec./Art. 4

The Board of Trustees, composition; qualification; appointment; tenure. The corporate powers and functions of the System shall be vested in and exercised by a Board of Trustees composed of a Chairman, the General Manager as ex-officio Vice-Chairman and three members, one of whom shall be nominated by the Labor Union representing the majority of the rank and file of the employees in the System.

They shall possess any one or a combination of the following qualifications; duly licensed professional of recognized competence in civil engineering and/or sanitary engineering, business management and finance, and law, or recognized labor leader within the ranks with sufficient training, particularly in the field of labor-management relations or corporate practice, all of good moral character with at least five (5) years of actual and distinguished experience in their respective fields of expertise.

The Chairman and the three members of the Board shall be appointed by the President of the Philippines with the consent of the Commission on Appointments. The Chairman and the three members of the Board shall hold office for a period of three years, except that the members initially appointed shall serve, as designated in their appointments, one for one year, one for two years and one for three years: Provided, That, any person chosen to fill a vacancy shall serve only for the unexpired term of the member whom he succeeds: Provided, further, That the term of the member nominated by labor maybe terminated sooner than as above provided if so requested by the nominating union in which case the President of the Philippines shall appoint a replacement who shall similarly be nominated by said union.