(A) Backflow prevention devices.
(1) Any backflow prevention device required by this subchapter shall be a model or construction approved by the Municipal Water Department.
(a) Air gap separation to be approved shall be at least double the diameter of the supply pipe measured vertically above the flood level rim of the vessel, but in no case less than one inch.
(b) A double check valve assembly or a reduced pressure principle backflow prevention device shall be approved by the Municipal Water Department and shall appear on the current list of approved backflow prevention devices established by the Water Department.
(2) Existing backflow prevention devices approved by the Municipal Water Department at the time of installation and properly maintained shall, except for inspection and maintenance requirements, be excluded from the requirements of this subchapter, as long as the Municipal Water Department is assured that they will satisfactorily protect the water system. Whenever the existing device is moved from its present location or requires more than minimum maintenance, or constitutes a hazard to health, the unit shall be replaced by a backflow prevention device meeting the requirement of this subchapter.
(Prior Code, § 3-129)
(B) Installation.
(1) Backflow prevention devices required by this subchapter shall be installed in a new facility, or in connection with reconstruction or maintenance of an existing facility or if required under § 52.39(B), shall be installed at a location and in a manner and be a model and size approved by the Municipal Water Department and shall be installed at the expense of the water consumer.
(2) Backflow prevention shall be located so as to be readily accessible for maintenance and testing, protected from freezing and where no part of the device will be submerged or subject to flooding by any fluid.
(Prior Code, § 3-130)
(C) Review.
(1) Whenever backflow prevention devices required by this policy are found to be defective, they shall be repaired or replaced without delay at the expense of the consumer.
(2) Any consumer required by the Municipal Water Department to install backflow prevention devices or eliminate cross-connections may have such requirement reviewed by the governing body upon written request for such review. The decision of the governing body in such situations shall be final for purposes of appeal to any appropriate court.
(3) Backflow prevention devices shall not be bypassed, made inoperative, removed or otherwise made ineffective without specific authorization by the Municipal Water Department.
(Prior Code, § 3-131) Penalty, see § 52.99