(a) Waste from showers, toilets, etc., to be washed into sewer system. All waste from showers, toilets, laundries, faucets and lavatories shall be washed into a sewer system extended from and connected with the city sewer system.
(b) Sanitary facilities not connected with sewer to be sealed. All sanitary facilities in any trailer which are not connected with the city sewerage system by means of rigid pipe connections shall be sealed and their use is hereby declared unlawful.
(c) Faucet sites to be equipped with drainage facilities. Each faucet site shall be equipped with facilities for drainage of waste and excess water into the sewer. In no case shall any waste water be thrown or discharged upon the surface of the ground or disposed of by means other than as herein provided.
(d) Garbage depositories. Every unit shall be provided with a substantial fly-tight metal garbage depository. (Code 1953, § 20.25.)