( 1) The competent authori ty may, by genera) or special order, authorise any officer of that authority-
(a) to m:spect any drain, latrine~ urmal, cesspool, pipe, sewer or channel m or on any buildjng or ]and in a slum area, and in his t1iscretion to cause the ground to be ooencd for the purpose of preventing or removing any nuisance arising from the drain, latrine, urina.l, cesspool, pipe, sewer or ~hannel, as the case may be;
(b) to examjne works under constru ct.ion i n the 3Jum arra, to take levels or to remove, test , cxaminr, replace or read any meter.
{2) If under subsection ( 1) any ground is opened~ the expenses thereby incurred shall be paid by the owner or occupier of the land or building. but if it is found 1hat no nuisance exists or, but for such opening, would have a risen, the grou nd or portion of any building , drain , or other work opened, injured or rea.ovcd for the purpose () [ such inspection shall hn filled in, reinstated, or made good , as th(! cace may bt:, by the comprtcnt authority.