No person shall-
(a) wilfully obstruct any person acting under the authority of the Corporation under this Chapter, in setting out lines or any work or pull up or remove any pillar post or stay fixed in the grounds for the purpose of setting out lines of such works, or deface or destroy any works made for the said purpose; or
(b) wilfully or negligently break, injure, turn on or open, close, shut off, or otherwise interfere with any lock, valve, pipe, or other work or apparatus belonging to the Corporation and pertaining to its duties and functions under this Chapter; or
(c) unlawfully obstruct the flow of, or flush, draw of, or divert or take sewage from any works belonging to the Corporation; or
(d) obstruct any officer or servant of the Corporation in discharge of his duties under this Chapter or refuse or wilfully neglect to furnish him with the means necessary for the making of any entry, inspection, examination or enquiry thereunder in relation to any sewage works.