§ 21-62. Definitions.

The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:

Approved shall mean accepted by the D.E.E.S. director or his/her designee as meeting an applicable specification stated or cited in this article, or as suitable for the proposed use, or as approved by the building division.

Auxiliary water supply shall mean any water supply on or available to the premises other than the purveyor's approved public water supply. These auxiliary waters may include water from another purveyor's public potable water supply or used waters or industrial fluids. These waters may be polluted or contaminated or they may be objectionable and constitute an unacceptable water source over which the water purveyor does not have sanitary control.

Backflow shall mean the undesirable reversal of flow of water or other substances through a cross connection and into the piping of a public water system or customer's potable water system.

Backflow preventer shall mean a device or means designed to prevent backflow or backsiphonage.

(1)

Air gap. The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of such vessel. An approved air gap shall be at least double the diameter of the supply pipe, measured vertically, above the top of the rim of the vessel; and, in no case, less than one (1) inch. When an air gap is used at the service connection to prevent the contamination or pollution of the public potable water system, an emergency bypass shall be installed around the air gap system and an approved reduced pressure principle device shall be installed in the bypass system.

(2)

Reduced pressure principle device. An assembly of two (2) independently operating approved check valves with an automatically operating differential relief valve between the two (2) check valves, tightly closing shutoff valves on either side of the check valves, plus properly located test cocks for the testing of the check and relief valves. The entire assembly shall meet the design and performance specifications in AWWA Standard C511-92. To be approved, these devices must be readily accessible for in-line maintenance and testing, and installed in a location where no part of the device will be submerged. The check valve shall permit no leakage in a direction reverse to the normal flow.

(3)

Double check valve assembly. An assembly of two (2) independently operating approved check valves with tightly closing shutoff valves on each side of the check valves, plus properly located test cocks for the testing of each check valve. The entire assembly shall meet the design and performance specifications in AWWA Standard C510-92. To be approved, these devices must be readily accessible for in-line maintenance and testing. The check valve shall permit no leakage in a direction reverse to the normal flow.

Backsiphonage shall mean the flow of water or other liquids, mixtures or substances into the distributing pipes of a potable water supply system from any source other than its intended source caused by the sudden reduction of pressure in the potable water supply system.

Building official shall mean the principal enforcing officer of the South Florida Building Code in the City of Lauderhill.

Contamination shall mean an impairment of the quality of the potable water by sewage, industrial fluids or waste liquids, compounds or other materials to a degree which creates an actual hazard to the public health through poisoning or through the spread of disease.

Cross connection shall mean any temporary or permanent connection between a public water system or customer's potable water system and any other system or source through which it is possible to introduce into any part of the public water system any substance other than the potable water that the public water system is supplying. Bypass arrangements, jumper connections, removable sections, swivel or changeover devices, and other temporary or permanent devices through which or because of which backflow could occur are considered cross connections.

Cross connections, controlled shall mean a connection between a potable water system and a nonpotable water system with an approved backflow prevention device properly installed that will continuously afford the protection commensurate with the degree of hazard.

Cross connection control by containment shall mean the installation of an approved backflow prevention device at the water service connection to any customer's premises where it is physically and economically infeasible to find and permanently eliminate or control all actual or potential cross connections within the customer's water system; or, it shall mean the installation of an approved backflow prevention device on the service line leading to and supplying a portion of a customer's water system where there are actual or potential cross connections which cannot be effectively eliminated or controlled at the point of cross connection.

Director of D.E.E.S. shall mean the director of the department of engineering and environmental services, in his/her capacity as water purveyor, is invested with the authority and responsibility for the implementation of an effective cross connection control program and for the enforcement of the provisions of this article.

Hazard, degree of shall mean, and the term is derived from, an evaluation of the potential risk to public health and the adverse effect of the hazard upon the potable water system.

(1)

Hazard, health shall mean any condition, device, or practice in the water supply system and its operation which could create, or in the judgment of the director of utilities [the department of engineering and environmental services] or his designee may create, a danger to the health and well-being of the water customer. An example of a health hazard is a structural defect, including cross connections, in a water supply system.

(2)

Hazard, plumbing shall mean a plumbing-type cross connection in a customer's potable water system that has not been properly protected by a vacuum breaker, air-gap separation or backflow prevention device. Unprotected plumbing-type cross connections are considered to be a health hazard.

(3)

Hazard, pollutional shall mean an actual or potential threat to the physical properties of the water system or to the potability of the public or customer's potable water system but which would constitute a nuisance or be aesthetically objectionable.

(4)

Hazard, system shall mean an actual or potential threat of severe damage to the physical properties of the public potable water system or the customer's potable water system or of a pollution or contamination which would have a protracted effect on the quality of the potable water in the system.

Industrial fluids systems shall mean any system containing a fluid or solution which may be chemically, biologically or otherwise contaminated or polluted in a form or concentration such as would constitute a health, system, pollutional or plumbing hazard if introduced into an approved water supply. This may include, but not be limited to:

(1)

Polluted or contaminated waters;

(2)

All types of process waters;

(3)

Used waters originating from the public potable water system which may have deteriorated in sanitary quality;

(4)

Chemicals in fluid form;

(5)

Plating acids and alkalies, circulated cooling waters connected to an open cooling tower and/or cooling towers that are chemically or biologically treated or stabilized with toxic substances;

(6)

Contaminated natural water, such as from wells, springs, streams, etc.;

(7)

Oils, gases, glycerine, paraffins, caustic and acid solutions; and

(8)

Other liquids and gaseous fluids used in industrial or other purposes or firefighting purposes.

Pollution shall mean the presence of any foreign substance, organic, inorganic, or biological in water, which tends to degrade its quality so as to constitute a hazard or impair the usefulness or quality of the water to a degree which adversely and unreasonably affects such water usage under existing federal and state clean water acts.

Water, nonpotable shall mean water which is not safe for human consumption or which is of questionable potability under federal and state standards.

Water, potable shall mean any water which, according to recognized federal and state standards, is safe for human consumption.

Water purveyor shall mean the owner or operator of the public potable water system supplying an approved water supply to the public.

Water, service connections shall mean the terminal end of a service connection from the public potable water system; i.e., where the water purveyor loses jurisdiction and sanitary control over the water at its point of delivery to the customer's water system. If a meter is installed at the end of the service connection, then the service connection shall mean the downstream end of the meter. There should be no unprotected takeoffs from the service line ahead of any meter or backflow prevention device located at the point of delivery to the customer's water system. Service connection shall also include temporary water service connections from fire hydrants and all other temporary or emergency water service connections from the public potable water system.

Water, used shall mean any water supplied by a water purveyor from a public potable water system to a customer's water system after it has passed through the point of delivery service connection and is no longer under the sanitary control of the water purveyor.

(Ord. No. 97O-12-158, § 1, 1-12-98)