Licensed plumbers

(1) No person, other than a plumber licensed by the Board sh&ll execute any work in respect of a water oonnection not being work of a trivial nature and no person shall permit any such work to be exeouted by a person other than a licensed plumber. (2) 'Vhen any work is executed in contravention of the provisions of sub-section (1), such work shall be liable to be dismantled at the discretion of the Board.