A. 
It is unlawful for any person to cause, suffer or permit the disposal of sewage, human excrement or other liquid wastes, in any place or manner except through and by means of an approved plumbing and drainage system and an approved sewage disposal system installed and maintained in accordance with the provisions of the Chapter 15.20 of this code and this chapter.
B. 
"Approved sewage disposal system" means a system that is functioning satisfactorily by disposing of all sewage underground.
(Prior code § 68.311)
The plumbing and drainage system of every building hereafter constructed or reconstructed shall be connected to a public sewer if the property on which such building is located abuts a public sewer. When a public sewer is not available for use, the plumbing and drainage system of a building shall be connected to an approved private subsurface sewage disposal system. The type of system required shall be determined on the basis of location, area, soil porosity, the groundwater level and the density of population in the area and shall be designed to receive and dispose of all sewage and liquid waste from the property served.
(Prior code § 68.312)
No person shall maintain a septic tank, settling tank, cesspool or other subsurface sewage disposal unit or system on any premises adjacent to a public sewer; provided, however, that where a public sewer is installed adjacent to premises upon which there is located an existing building served by a septic tank, settling tank, cesspool or other subsurface disposal unit or system, the director may approve the continued use of such subsurface disposal system until such time as he or she deems that the public health and sanitation require the connection of such building to the public sewer and the discontinuance of the use or maintenance of such subsurface disposal system.
(Prior code § 68.313)
Where the director determines it is probable that a public sanitary sewer will become available to property within twenty-four months, he or she may issue a permit to the owner of such property authorizing the construction of a temporary sewage disposal facility provided the permittee executes and records in the office of the county recorder an agreement with the director providing:
A. 
That the permittee will connect the property to the sanitary sewer within thirty days after it becomes available to the property;
B. 
That, if the sanitary sewer does not become available to the property within a period of time specified by the director, the permittee will apply for a permit for and construct a septic tank and sewage disposal system in accordance with the provisions of this chapter;
C. 
That the permittee will pump and remove all sewage from said temporary sewage disposal facility and fill said facility with soil or other material in a manner approved by the director at the time the property is connected to the sanitary sewer or a septic tank and sewage disposal system specified in subsection B of this section;
D. 
That, in the event the property is sold or transferred before the connection of the property to the sanitary sewer is made, the agreement with the director shall be made a part of the contract to sell or transfer said property;
E. 
That the property will not be occupied until a sewage disposal facility has been installed and approved by the director;
F. 
That the agreement with the director shall be binding upon the owner, his or her heirs, administrators, executors, successors and assigns.
It is unlawful for any person by the terms of such agreement to violate any provision of such agreement.
(Prior code § 68.316)