Except as section 4.308 provides to the contrary, no building permit shall be issued by the city after the effective date of this code unless the plans and specifications for such building, in the event that sewerage facilities are provided in it, provide that the same be connected to the public sewerage system of the city as required by section 3.350 of this code.
Except as section 4.308 provides to the contrary, it shall be unlawful to install a septic tank or other private sewage disposal system within the city after the effective date of this code.
Except as sections 4.306 to 4.308 provide to the contrary:
(1) 
Where a public sanitary sewer is not available for a building and the sewer outlet for the building is connected to a septic tank at the time this code takes effect, the connection may be maintained and the septic tank may continue to serve the building; and
(2) 
Nothing in this article shall apply to septic tanks or private sewage disposal systems in use at the time this code takes effect, except that the same may not be replaced, and if the need therefor arises, then the replacement shall be by connection to the public sewerage system of the city.
Except as section 4.308 provides to the contrary, no person shall use or allow on premises under his or her control any privy other than a temporary one that is necessary for a construction project and is constructed and maintained in accordance with standards of the Department of Environmental Quality.
The council reserves the right, in its discretion, to allow the replacement of existing septic tanks or privies and to authorize the issuance of building permits where special conditions or considerations exist, whereby the public interest will best be served by permission to install or replace a septic tank or to install or replace a privy. In such cases, the council shall set forth its reasons in a resolution in writing, and such resolution shall, among other things, recite that the Lane County sanitarian has approved the septic tank or privy.