Backflow preventers required by this Article shall have been tested and approved or listed for the intended use by one of the following organizations:
A. Foundation for Cross-Connection Control and Hydrologic Research, University of Southern California, University Park, Los Angeles, California 90089.
B. American National Standards Institute, 1430 Broadway, New York, New York 10018.
C. Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, Illinois 60062.
D. National Sanitation Foundation, 2355 West Stadium Boulevard, P. O. Box 1468, Ann Arbor, Michigan 48106.
E. International Association of Plumbing and Mechanical Officials, 5032 Alhambra Avenue, Los Angeles, California 90032.