All sewage and other water-carried wastes shall be disposed of directly into a municipal sewer system when available. In mobile home parks in which City sewer connections are not available, disposal will be into a private sewer system which shall include a sanitary means of disposal, the operation of which creates neither a nuisance nor a menace to health; provided, that no private sewer system may be utilized or used without the approval of the Health Officer as defined in TMC 1.10.020. (Code 1981 § 25-104. Code 1995 § 98-153.)