The type of protection required under § 53.125(A), (B), and (C) above shall depend on the degree of hazard which exists as follows:
(A) An approved air gap separation shall be installed where the public water supply system may be contaminated with substances that are dangerous to public health and could cause a severe health hazard, and where such a device would be technically feasible and/or practical.
(B) An approved air gap separation or an approved reduced pressure zone device shall be installed where the public water supply system may be contaminated with a substance that could cause a system or health hazard.
(C) An approved air gap separation, an approved reduced pressure zone device, or an approved double check valve assembly shall be installed where the public water supply system may be polluted with substances that would be objectionable but not dangerous to health.
(Ord. 1447, passed 10-16-2017)