No water service connection from the City's water system to any premises shall be installed or maintained unless the City's water supply is protected, as determined to be necessary, by backflow prevention devices as required by rules and regulations of the State Department of Health and Welfare and by this Chapter. The installation or maintenance of a cross-connection which will endanger the water quality of this City's water supply system is prohibited. Any such cross-connection now existing or hereafter installed is hereby declared a nuisance and shall be abated. The control and/or elimination of cross-connection within the distribution system of the City shall be in accordance with the State Department of Health and Welfare, Division of Environment Rules and Regulations as well as the Rules and Regulations of the City. The City Council may establish requirements of cross-connection control within the City more stringent than said State regulations if it determines that conditions so dictate. (Ord. 385, 7-1-80)