(A) Installation of approved backflow prevention assemblies.
(1) Use of backflow prevention assembly. When backflow prevention is required as set forth in § 52.31, the water customer shall install, at the water customer's expense, an approved backflow prevention assembly that is in accordance with 327 IAC 8-10-7 and provides protection commensurate with the degree of hazard, hydraulic conditions, and is appropriate with the length of time the backflow prevention assembly is subject to be under pressure.
(2) Location. The backflow prevention assembly shall be located immediately downstream of the water meter and shall not be bypassed by any means. There shall be no taps upstream of the backflow prevention assembly that are not protected by additional backflow prevention assemblies. The existence of backflow prevention assemblies on the water customer's premises other than at this required location shall not negate the requirement at this location. Exact installation, alignment and elevation requirements shall be determined by reference to 327 IAC 8-10-7 and other applicable state and local regulations.
(3) Uninterrupted service. Water customers needing continuous service that cannot be interrupted for testing the backflow prevention assembly shall install dual backflow prevention assemblies in parallel so that they can be checked separately.
(4) Looped taps. Heat exchange loops intentionally returning water to the public potable water system shall not be allowed. Any other loop or set of taps into a private customer water system allowing water to return to the public potable water system shall require approved backflow prevention assemblies on all taps.
(5) Private fire service. No connection shall be made to any fire hydrant or private fire service without an approved backflow prevention assembly. Private fire service that is permanent in nature shall incorporate a double check valve assembly in one hundred-percent water systems or a reduced pressure principle backflow preventer in chemical systems. Where domestic service is tapped into a private fire service, the domestic tap shall be subject to all the provisions of this chapter.
(6) Pre-existing facilities. In general, pre-existing backflow preventers will not be allowed simply because they were approved before the enactment of this chapter. The Utility will review the operation and hazard of each facility with backflow preventers and determine acceptability based on operability and present hazard. If the backflow preventers are found unacceptable, they shall be replaced with an approved backflow prevention assembly, at the water customer's expense, in accordance with this chapter. Pre-existing facilities that have no backflow prevention assembly and where there is a definite present hazard shall be required to install an approved backflow prevention assembly, regardless of whether their plumbing system was previously approved by the city.
(7) Reduced pressure principle backflow preventer required. A reduced pressure principle backflow preventer shall be required for the following designated cross-connection hazards:
(a) Aircraft and missile manufacturing plants.
(b) Automotive plants, including those plants that manufacture motorcycles, automobiles, trucks, recreational vehicles, and construction and agricultural equipment.
(c) Beverage bottling plants, including dairies and breweries.
(d) Canneries, packing houses, and reduction plants.
(e) Car washes.
(f) Chemical, biological, and radiological laboratories, including those in high schools, trade schools, colleges, universities, and research institutions.
(g) Hospitals, clinics, medical buildings, autopsy facilities, morgues, other medical facilities, and mortuaries.
(h) Metal and plastic manufacturing, fabricating, cleaning, plating, and processing facilities.
(i) Plants manufacturing paper and paper products.
(j) Plants manufacturing, refining, compounding, or processing fertilizer, film, herbicides, natural or synthetic rubber, pesticides, petroleum or petroleum products, pharmaceuticals, radiological materials, or any chemical that could be a contaminant to the public water supply.
(k) Commercial facilities that use herbicides, pesticides, fertilizers, or any chemical that could be a contaminant to the public water supply.
(l) Plants processing, blending, or refining animal, vegetable, or mineral oils.
(m) Commercial laundries and dye works, excluding coin-operated laundromats.
(n) Sewage, storm water, and industrial waste treatment plants and pumping stations.
(o) Waterfront facilities, including piers, docks, marinas, and shipyards.
(p) Industrial facilities that recycle water.
(q) Restricted or classified facilities (federal government defense or military installations), or other facilities closed to the supplier of water or to the commissioner.
(r) Any other commercial or industrial facility that is deemed by the Utility to pose a contamination hazard.
(B) Testing intervals. The water customer shall have its backflow prevention assembly(ies) tested by a cross connection control device inspector at intervals in accordance with 327 IAC 8-10-8 at the water customer's expense.
(C) Reporting requirements. Cross connection control device inspectors shall submit the backflow assembly testing result and assembly repair and/or overhaul reports to the Utility pursuant to procedures required by the Utility within ten calendar days after the test has been completed.
(D) Access. Any water customer or owner of a private customer water system shall allow access to the customer's facilities for inspection of the customer water system and for testing of any backflow prevention assembly. If access for inspection is denied for any reason, a maximum hazard shall be assumed requiring a reduced pressure backflow prevention assembly.
(Ord. G-6-18, passed 3-27-18)