No public or private sewer or connection shall
be laid or constructed except by the City or its authorized representative
or a drainlayer duly licensed by the Board of Public Works.
The entire work of laying a private sewer to
connect with a public sewer is subject to the inspection of, and shall
be done in a manner satisfactory to, the Board of Public Works and
the City Engineer. The drainlayer shall not perform any of the work
making the connection unless the City's Sewer or Plumbing Inspector
or authorized representative is present. The drainlayer shall be held
responsible for any expenses to the City on account of any imperfect
work.