No statement contained in this article shall be construed to interfere with any additional requirements that may be imposed by the Derry Building Inspector or Health Officer.
At such time as a public sewer becomes available to a property served by a private sewage disposal facility, as provided in § 122-7, a direct connection shall be made to the public sewer in compliance with this chapter, and any septic tanks, cesspools, and similar private sewage disposal facilities shall be cleaned and filled with suitable material.