(1) Sanitary Drainage System. The piping which conveys sewage from plumbing fixtures to a public sewer or private sewage disposal system.

(2) Sewage. Any liquid or liquid borne waste from the ordinary living processes, or liquid or liquid borne waste which contains animal or vegetable matter in suspension or solution, or liquid or liquid borne waste which may contain a chemical in solution, and which may be lawfully discharged into a public sanitary sewer.

(3) Sewage Disposal System. Sanitary drainage systems, septic tanks, grease traps, leaching pits, surface and subsurface leaching filter beds, and appurtenances; or other approved facilities for the disposal of sewage by means other than through a public sewer. (Amended by Res. adopted July 20, 1970).