No water service connection to any premises shall be installed or continued in use by the City unless the water supply is protected by backflow prevention devices as may be required by this chapter. The installation or maintenance of a cross-connection which will endanger the water quality of the potable water supply of the City of Deary shall be unlawful and is prohibited. Any such cross-connection now existing or hereafter installed is declared to be a public nuisance and the same shall be abated. The control or elimination of cross-connections shall be in accordance with this chapter and the regulations set forth in section 1-8306 of the "Idaho Regulations for Public Drinking Water System", together with the latest edition of appropriate manuals of standard practice pertaining to cross-connection control approved by the engineer. Council shall have the authority to establish requirements more stringent than State regulation if it is deemed that the conditions do dictate. The City shall adopt rules and regulations as necessary to carry out the provisions of this chapter. (Ord. 251 § 3, 1983)