§ 31.011 SEPTIC TANKS PROHIBITED
   It shall be unlawful to construct or maintain a privy, well, vault, cesspool, cistern, septic tank or similar contrivance for the reception of flowable sewage where sewers are available in the city. All privies, wells, vaults, cesspools, cisterns, septic tanks, facilities and similar contrivances shall be removed or disconnected by the owners and the occupants of premises as soon as sewers are made available tot the premises by the city. All privies, facilities, and other means of casting or depositing sewage into a container above or below the surface of the ground, or upon or into the soil or into any running or percolating stream of water or into any cistern or well, whereby the soil is contaminated with sewage, are hereby declared to be unlawful and to constitute a nuisance.
(1985 Code)