Each mobile home lot shall be provided with a sewer, which shall be connected to the mobile home situated on the lot, to receive the waste from the shower, tub, flush toilets, washing machine, lavatory and kitchen sink in such home. The sewer shall be connected to a public or private sewer system so as not to present a health hazard. Sewer connection in unoccupied lots shall be so sealed to prevent the emission of any odors and the creation of breeding places for insects.