2020-053 - Amendments to Chapter 25, "Plumbing and Gas," Article II, Section 25-17

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Section 608. 1, General, shall be amended to read as follows: 608.1 General. A potable water supply system shall be designed, installed and maintained in such a manner so as to prevent contamination from non -potable liquids, solids or gases being introduced into the potable water supply through cross -connections or any other piping connections to the system. Backflow preventer applications shall conform to a plicabje,local regulations Table 608. 1, e*Gept and as specifically stated in Sections 608.2 through 608.16.10. Section 608.16.5, Connections to lawn irrigation systems, shall be amended to read as follows: 608.16.5 Connections to lawn irrigation systems. The potable water supply to lawn irrigation systems shall be protected against backflow by an atmospheric -type vacuum breaker, a pressure-type vacuum breaker, awdouble-check assembly or a reduced pressure principle backflow preventer. A valve shall not be installed downstream from an atmospheric vacuum breaker. Where chemicals are introduced into the system, the potable water supply shall be protected against backflow by a reduced pressure principle backflow preventer. Section 608.17, Protection of individual water supplies, shall be amended to read as follows: 608.17 Protection of individual water supplies. An individual water supply shall be located and constructed so as to be safeguarded against contamination in accordance with applicable local re ul�atio_ns_.,.. Installation shall be in accordance with Sections 608.17.1 through 608.17.8. Section 610.1, General, shall be amended to read as follows: 610.1 General. New or repaired potable water systems shall be purged of deleterious matter and disinfected prior to utilization. The method to be followed shall be that prescribed by the health authority or water purveyor having jurisdiction or, in the absence of a prescribed method, the procedure described in either AWWA C651 or AWWA C652, or as described in this section. This requirement shall apply to "on-site" or "in -plant' fabrication of a system or to a modular portion of a system. 1. The pipe system shall be flushed with clean, potable water until dirty water does not appear at the points of outlet. 2. The system or part thereof shall be filled with a water/chlorine solution containing at least 50 parts per million (50 mg/L) of chlorine, and the system or part thereof shall be valved off and allowed to stand for 24 hours; or the system or part thereof shall be filled with a water/chlorine solution containing at least 200 parts per million (200 mg/L) of chlorine and allowed to stand for 3 hours. 3. Following the required standing time, the system shall be flushed with clean potable water until the chlorine is purged from the system. 4. The procedure shall be repeated where shown by a bacteriological examination that contamination remains present in the system. E? c tion IT With rrior a roval the Code Official may wave this recgu,iwrement when deemed un-neoessg[y., Section 703.6, Combined sanitary and storm public sewer, shall be deleted in its entirety. Amendments to 2015 IPC