(A) When backflow or backsiphonage prevention devices are required by this code, the prevention devices shall provide a minimum level of protection as provided in Attachment A, made a part hereof.
(B) Provided, however, this shall be a minimum standard of protection. When, in the opinion of the Water Commissioner, a different level of protection would be more appropriate, the Water Commissioner shall prescribe the method of backflow or backsiphonage protection.
(1999 Code, § 3-126) Penalty, see § 52.99