At a minimum, a backflow prevention assembly will be required in each of the following circumstances:
(A) When the nature and extent of any activity at a building, or the materials used in connection with any activity at a building, or materials stored at a building, could contaminate or pollute the city’s water system;
(B) When internal cross-connections are present that are not correctable;
(C) When intricate plumbing arrangements are present that make it impractical to ascertain whether cross-connections exist;
(D) When a building has a repeated history of cross-connections being established or reestablished;
(E) When entry to a building is unduly restricted so that inspections for cross-connections cannot be made;
(F) When materials are being used such that, if backflow should occur, a health hazard could result;
(G) When installation of an approved backflow prevention assembly is deemed by an Inspector to be necessary to accomplish the purpose of this chapter;
(H) When an appropriate CSI report form has not been filed with the city;
(I) When a fire sprinkler system using non-potable piping material is connected to the city’s water system;
(J) In all new non-residential construction there shall be installed an approved BFPA at the service connection. The type of the assembly will be commensurate with the degree of hazard as determined by an Inspector;
(K) Commercial building when the end use of such building is not determined or could change, a reduced pressure principle backflow prevention assembly shall be installed at the service connection;
(L) If a building is required to have BFPA, but water cannot be turned off during the testing of such assemblies, the premises shall be equipped with dual BFPA of the same type so that testing, repair and maintenance can be performed;
(M) Any used water return system that has received approval from the city;
(N) If a point-of-use assembly has not been tested or repaired as required by this chapter, a BFPA will be installed at the water meter;
(O) If an Inspector determines that additions or rearrangements have been made to the plumbing system without the proper city permits, a BFPA shall be required;
(P) All multi-story buildings or any building with a booster pump or elevated storage tank; and
(Q) Any premises requiring multiple service connections for adequacy or supply and/or fire protection shall have a backflow assembly on each service connection. The assembly shall be commensurate with the degree of potential hazard that could occur in the event of an interconnect between any of the buildings on the premises.
(Ord. 2011-2, passed 4-25-2011)