(1) Where the local authority has made by-laws providing for the examination and licensing of plumbers, no person other than a plumber licensed under such by-laws shall undertake any plumbing work other than the replacement, rewashering and repacking of taps and ball-valves or the cleaning of the waste-pipe of a sanitary fitting.

(2) No person shall cause or permit any service-pipe to be covered in the course of the installation or alteration of a service until such pipe has been examined and approved by the local authority.

(3) When the installation or alternation of any service is ready for inspection, notice thereof shall be given to the local authority.

(4) No service shall be placed in use, and in the case of fire-extinguishing equipment, no supply of water shall be given, unless and until the service or equipment has been inspected and a certificate of approval issued by the local authority.

(5) Every addition to, or alteration of, a service connected to the local authority’s supply system shall be subjected to inspection by, and approval of, the local authority.

(6) Every service, and any addition to or alteration of a service, shall, in the event of no certificate of approval being issued, forthwith be altered to comply with the provisions of this Chapter or, failing such alteration, shall be immediately removed.