§ 21-66. Installation.

(a)

An approved backflow prevention device shall be installed on each service line to a customer's water system at or near the property line and within the city's department of environmental and engineering services easement or immediately inside the building being served, but, in all cases, before the first branch line leading off the service line wherever the following conditions exist:

(1)

In the case of premises having an auxiliary water supply, the public water system shall be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard.

(2)

In the case of premises upon which any industrial fluids or any other objectionable substance is handled in such a fashion as to create an actual or potential hazard to the public water system, the public system shall be protected against backflow from the premises by installing a backflow prevention device in the service line appropriate to the degree of hazard. This shall include the handling of process waters and waters originating from the department of environmental and engineering services system which have been subject to deterioration in quality.

(3)

In the case of premises having internal cross connections that cannot be permanently corrected and controlled, intricate plumbing and piping arrangements, or where entry to all portions of the premises is not readily accessible for inspection purposes, making it impracticable or impossible to ascertain whether or not dangerous cross connections exist, the public water system shall be protected against backflow from the premises by installing a backflow prevention device in the service line.

(b)

The type of protective device required shall depend upon the degree of hazard which exists as follows:

(1)

In the case of any premises where there is an auxiliary water supply as stated in this section, the public water system shall be protected by an approved air-gap separation or an approved reduced pressure principle backflow prevention device.

(2)

In the case of any premises where there is water or substance that would be objectionable, but not hazardous to health if introduced into the public water system, the public water system shall be protected by an approved double check valve assembly.

(3)

In the case of any premises where there is any material dangerous to health which is handled in such a fashion as to create an actual or potential hazard to the public water system, the public water system shall be protected by an approved air-gap separation or an approved reduced pressure principle backflow prevention device. Examples of premises where these conditions may exist include, but are not limited to, wastewater treatment plants, wastewater pumping stations, chemical manufacturing plants, hospitals, mortuaries, and metal plating plants.

(4)

In the case of any premises where there are cross connections that are not controlled, either actual or potential, the public water system shall be protected by an approved air-gap separation or an approved reduced pressure principle backflow prevention device at the service connection.

(5)

In the case of any premises where, because of security requirements or other prohibitions or restrictions, it is impossible or impractical to make a complete in-plant cross connection survey, the public water system shall be protected against backflow or backsiphonage from the premises by installation of a backflow prevention device in the service line. In this case, maximum protection will be required; that is, an approved air-gap separation or an approved reduced pressure principle backflow prevention device shall be installed in each service to the premises.

(c)

A waiver of the requirements in paragraph (a) above may be requested by the owner. The owner must supply documentation that compliance with paragraph (a) will adversely affect the operation of a preexistent fire protection system. Also, a waiver of the requirements in paragraph (a) may be requested by the owner in each case where the owner maintains documentation showing all of the following:

(1)

The potable water system on the premises supplies water only for ordinary domestic type uses (i.e., toilet flushing, hand washing or bathing, cooking or dishwashing, drinking, washing clothes, or general household cleaning) and does not supply water to any irrigation piping system, fire protection system, cooling water system, space heating hot water or steam boiler, single-wall heat exchanger, double-wall heat exchanger without leak detection capability, or water loading station.

(2)

The premises is subject to the inspection provisions of the state plumbing code and the potable water system on the premises conforms with the state plumbing code.

(3)

The premises does not have multiple interconnected water service connections and does not have any auxiliary water system, reclaimed water system, wastewater pump unless the premises is a nonindustrial premises with just a submersible wastewater pump, or multistory building with four (4) or more stories above-ground.

(4)

No chemical except those chemicals that conform with the standards in Rule 62-555.320 F.A.C., or any amendments thereto, is added to the potable water system on the premises.

(d)

Any backflow prevention device required herein shall be of a make, model, and size approved by the city. The term "approved backflow prevention device" shall mean a device that has satisfactorily passed at least one (1) of the following evaluations:

(1)

A laboratory and field evaluation in accordance with ANSII/AWWA Standard C510-92 or C511-92, each of which is incorporated by reference in Rule 62-555.330 F.A.C.;

(2)

A laboratory evaluation in accordance with ANSI/ASSE Standard 1020-1990, 1024-1990, 1047-1995, or 1048-1995, each of which is incorporated by reference in Rule 62-555.330 F.A.C.; or

(3)

A laboratory and field evaluation in accordance with Section 10 of the University of Southern California's Manual of Cross Connection Control, which is adopted by reference in Rule 62-555.335 F.A.C..

(e)

Each in-line testable backflow preventer must be tested immediately after being installed or repaired before being put into operation.

(Ord. No. 97O-12-158, § 1, 1-12-98)