On all property referred to in Section 1850.01, there shall be constructed to receive and dispose of waste water, offal or other material constituting sewage, a watertight cesspool, provided that no other method of disposal proves feasible: Such watertight cesspool shall not be less than six feet in diameter by ten feet deep in clear or equivalent, shall be built of cast iron, vitrified brick, eight inches thick laid in Portland cement mortar, or Portland cement concrete eight inches thick, and shall be made watertight and maintained.
(1969 Code Sec. 98.78)