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06/09/2008 <br /> T. Water System, Customer: The customer-user's water system shall include those <br /> parts of the facilities beyond the termination of the City distribution system that <br /> are utilized in conveying City delivered domestic water to points of use. <br /> Sec. 38.38 Requirements for Backflow Protection <br /> A. Conditions Necessitating Backflow. In the case of premises having any of the <br /> following, the public water system shall be protected against backflow from the <br /> premises by installing an approved backflow prevention assembly in the service <br /> line, appropriate to the degree of hazard: <br /> 1. An auxiliary water supply or a supply that is not or may not be of safe <br /> bacteriological or chemical quality and that is not acceptable as an <br /> additional source by the City. <br /> 2. Industrial fluids or any other objectionable substances are handled in such <br /> a fashion as to create an actual or potential hazard to the public water <br /> system. This shall include the handling of process waters and waters <br /> originating from the utility system that have been subject to deterioration in <br /> quality. <br /> 3. Internal cross connections that cannot be permanently corrected and <br /> controlled. <br /> 4. Intricate plumbing and piping arrangements. <br /> 5. Where entry to all portions of the premises is not readily accessible for <br /> inspections purposes, making it impracticable or impossible to ascertain <br /> whether or not dangerous cross connections exist. <br /> B. Type of Backflow Protection. The type of protective assembly required under <br /> subsection 38.38(A) shall depend upon the degree of hazard that exists. <br /> 1. The public water system shall be protected by an approved air gap <br /> separation, or a reduced pressure principle backflow prevention assembly <br /> if approved by the Director, on each service to the premises for the <br /> following degrees of hazard. <br /> a. In the case of any premises where there is an auxiliary water <br /> supply. <br /> b. In the case of any premises where there is any material dangerous <br /> to health that is handled in such a fashion as to create an actual or <br /> potential hazard to the public water system. Examples of premises <br /> where these conditions will exist include sewage treatment plants, <br /> ATTY/ORD/ORD.305 ORD.2331 <br /> 041608 5 FORMERLY MUFF#802 <br />