S.D. Admin. R. 20:54:25:03
The water-distributing system must be protected against backflow. Each water outlet must be protected from backflow, preferably by having the outlet end from which the water flows spaced a distance above the flood-level rim of the receptacle into which the water flows that is sufficient to provide a minimum air gap as required in Table 603.3.1 of the Uniform Plumbing Code, 2015 edition. If it is not possible to provide a minimum air gap, the water outlet must be equipped with an accessible backflow preventer complying with section 603.2 of the Uniform Plumbing Code, 2015 edition, installed on the discharge side of the manual control valve.
S.D. Admin. R. 20:54:25:03
General Authority: SDCL 36-25-14, 36-25-15.
Law Implemented: SDCL 36-25-15.
Uniform Plumbing Code, 2015 edition, International Association of Plumbing and Mechanical Officials. Copies may be obtained from the International Association of Plumbing and Mechanical Officials, 5001 East Philadelphia Street, Ontario, CA 91761. Cost $143.