7. Director General, Deputy Director General, etc.
(1) The Minister shall appoint, from among members of the public service, a Director General of Sewerage Services.
(2) There shall be appointed, by the appropriate Service Commission from among members of the relevant public service, a Deputy Director General of Sewerage Services who shall, subject to the control and direction of the Director General, have the powers and functions of the Director General, other than the power of delegation referred to in subsection (4).
(3) There shall be appointed, by the appropriate Service Commission from among members of the relevant public service, such numbers of Directors, Deputy Directors, Assistant Directors and other officers as may be necessary for the purposes of this Act and they shall be subject to the control, direction and supervision of the Director General.
(4) The Director General may, in relation to any particular matter or class of matters, by writing under his hand, delegate all or any of his powers or functions under this Act, except his power of delegation, to any Director, Deputy Director, Assistant Director, or other officer so that the delegated powers or functions may be exercised or performed by such Director, Deputy Director, Assistant Director, or other officer.
(5) A delegation under subsection (4) is revocable at the discretion of the Director General and does not prevent the Director General or Deputy Director General from exercising the powers or performing the functions delegated under that subsection.