Single Family Dwelling shall be construed to mean any building intended to provide living quarters for not more than one single family unit.

Multi-Dwelling shall be construed to mean any building or group of buildings intended to provide living quarters for two or more single family units.

(E.D.U) Equivalent Domestic Unit shall be construed to mean a sewerage flow of 225 gallons per day, with an average strength of 200 milligrams per liter B.O.D. and suspended solids, or equivalent.