An approved backflow prevention device shall be installed when the following conditions are found by the City Manager to exist:
(A) Where a substance is handled in such a fashion as to create an actual or potential hazard to a public water supply system. This shall include premises having sources or systems containing process fluids or waters originating from a public water supply system which are no longer under the sanitary control of the city;
(B) Where internal cross-connections are not correctable in the judgment of the City Manager, or there exists intricate plumbing arrangements which make it impracticable to determine whether or not cross-connections exist;
(C) Where, because of security requirements or other prohibitions or restrictions, it is impossible or impractical to make a complete cross-connection survey;
(D) Where cross-connections have been established or re-established within the preceding three years; or
(E) Where there is more than one customer service connection which could constitute a potential cross-connection.
(Ord. 3261, passed - -1992)