Prohibition of certain acts.

No person shall,-

(a) wilfully obstruct any person acting under the authority of the Board in setting out the lines of any works or pullup or remove any pillar, post or shaft fixed in the ground for the purpose of setting out lines of such work;

(b) wilfully or negligently break, injure, turn on, repairs;

(c) wilfully or negligently break, injure, turn on, open, close, shut off or otherwise interfere with any lock, cock, valve, pipe, or other work or apparatus belonging to the Board;

(d) unlawfully obstruct the flow of or flush, draw off, divert or take sewege from any sewage work belonging to the Board; or

(e) obstruct any officer or other employee of the Board in the discharge of his duties under this chapter or refuse or