The owner of any existing commercial and industrial premises shall protect the public water system against backflow by installing an approved device commensurate with the degree of hazard in the non-fire service line, if the premises contain the following:
(A) An auxiliary water supply that is not or may not be of safe bacteriological or chemical quality and that is not acceptable as an additional source by the Water Department;
(B) Any industrial fluids or any other objectionable substances that are handled in such a fashion as to create an actual or potential hazard to the public water system; or premises where, in the opinion of the Superintendent, an undue health threat is posed because of the presence of toxic substances. This shall include the handling of process waters and waters originating from the utility system that have been subject to deterioration in quality; or
(C) Multiple internal cross-connections; or premises where entry to the necessary portions of the premises is not accessible for inspection purposes, making it impossible to ascertain whether or not dangerous cross-connections exist.
(Ord. 357, passed 4-1-2006)