The following words, terms and phrases, when used in this chapter, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
APPROVED. Accepted by the Director as meeting an applicable specification stated or cited in this chapter, or as suitable for the proposed use.
APPROVED BACKFLOW PREVENTER. Only the following may be considered to be approved backflow preventers:
(1) Air gap separation - A physical separation between the free-flowing discharge end of a potable water supply pipeline and an open or non-pressure receiving vessel. An “approved air gap separation" shall be at least double the diameter of the supply pipe measured vertically above the top of the rim of the vessel. In no case shall it be less than one inch.
(2) Reduced pressure zone ("RPZ") backflow preventer - A device containing within its structure a minimum of two independently acting approved check valves, together with an automatically operating pressure differential relief valve located between the two check valves. The first check valve reduces the supply pressure a predetermined amount so that during normal flow and at cessation of normal flow the pressure between the checks shall be less than the supply pressure. In case of leakage of either check valve, the differential relief valve, by discharging to the atmosphere, shall operate to maintain the pressure between the checks less than the supply pressure. The unit shall include tightly closing shutoff valves located at each end of the device, and each device shall be fitted with properly located test cocks.
(3) Atmospheric vacuum breaker - A backflow prevention device which is operated by atmospheric pressure in combination with the force of gravity. The unit is designed to work on a vertical plane only. The one moving part consists of a poppet valve which must be carefully sized to slide in a guided chamber and effectively shut off the reverse flow water when a negative pressure exists.
(4) Pressure vacuum breaker - A pressure vacuum breaker is similar to an atmospheric vacuum breaker except that the checking unit "poppet valve" is activated by a spring. This type of vacuum breaker does not require a negative pressure to react and can be used on a pressure side of a valve.
(5) Double check valve assembly - An assembly composed of two single, independently acting, check valves, including tightly closing shutoff valves located at each end of the assembly and suitable connections for testing the water tightness of each check valve. A check valve is a valve that is drip-tight in the normal direction of flow when the inlet pressure is one psi and the outlet pressure is zero. The check valve shall permit no leakage in a direction reverse to the normal flow. The closure element (e.g. clapper) shall be internally weighted or otherwise internally loaded to promote rapid and positive closure.
(6) Residential Dual Check - A compact unit manufactured with two independent spring actuated check valves. The residential dual check is acceptable only at single-family residential properties with an auxiliary water supply for irrigation.
Additional restrictions and criteria regarding the acceptable type of approved backflow preventer are contained in Chapter 62-555, Florida Administrative Code, the Florida Plumbing Code, and throughout this chapter.
The approved backflow preventer shall be installed in agreement with and under the supervision of the city or its designated representative (plumbing inspector, etc.) at the customer’s meter, at the property line of the customer when a meter is not used, or at a location designated by the supplier of water or the Department. Such devices shall be manufactured in full conformance with the standards established by the American Water Works Association titled “AWWA C510 - Standard for Double Check Valve Backflow Prevention Assembly”, latest revision, and “AWWA C511 Standard for Reduced Pressure Principle Backflow Prevention Assembly”, latest revision, and meet completely the laboratory and field performance specifications of the Foundation for Cross-Connection Control and Hydraulic Research of the University of Southern California established by “Specification of Backflow Prevention Assemblies” - Section 10 of the most current issue of the “Manual of Cross-Connection Control”. The AWWA and FCCHR standards and specifications have been adopted by the city. Final approval shall be evidenced by a certificate of approval issued by an approved testing laboratory certifying full compliance with said AWWA standards and FCCHR specifications. An approved list of qualified laboratories will be available from the Department. Backflow preventers that may be subjected to back pressure or back-siphonage that have been fully tested and have been granted a certificate of approval by an approved laboratory and are listed on that laboratories’ current list of approved backflow preventers may be used without further testing or qualification. The approved backflow preventer device shall be installed in compliance with the requirements of the Florida Plumbing Code.
AUXILIARY WATER SUPPLY. Any water supply on, or available to the premises other than the city’s approved public potable water supply.
BACK-SIPHONAGE. The flow of water or other liquids, mixtures or substances into the distribution 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.
BACKFLOW. The flow of water or other liquids, mixture or substances, under positive or reduced pressure into the distribution pipes of a potable water supply from any source other than its intended source.
BACKFLOW PREVENTER. An assembly or means designed to prevent backflow or back-siphonage.
CERTIFIED BACKFLOW TESTER. A person who has successfully completed at least a 32 hour backflow prevention course and has a current Certificate of Completion from one of the schools endorsed by the Florida Section AWWA.
CONTAINMENT. A method of backflow prevention which requires a backflow preventer at the potable water service connection.
CONTAMINANT. A physical, chemical, biological or radiological substance or matter in water.
CROSS-CONNECTION. Any physical arrangement whereby a public water supply is connected, directly, or indirectly, with any other water supply system, sewer, drain, conduit, pool, storage reservoir, plumbing fixture, or other assembly which contains or may contain contaminated or polluted water, sewage, or other waste, or liquid of unknown or unsafe quality which may be capable of imparting contamination or pollution to the public water supply as a result of backflow or back-siphonage. By-pass arrangements, jumper connections, removable sections, swivel or changeable assemblies, and other temporary or permanent assemblies through which or because of which backflow or backsiphonage could occur are considered to be cross-connections.
CUSTOMER. Any person, firm or corporation, or governmental entity, using or receiving water from the city’s utility system.
CUSTOMER WATER SYSTEM. Includes those parts of water system facilities beyond the point of delivery that are utilized to convey potable or reclaimed water to the customer’s points of use.
DEPARTMENT. The City of Pompano Beach Utility Department.
DIRECTOR. The Utilities Director or delegated representative, in charge of the City Utilities
Department, who is hereby invested with the authority and responsibility for the implementation of a cross-connection control program and for the enforcement of the provisions of this chapter.
FIRE SERVICE. A potable water service for a customer which is used to supply a fire protection system.
FLORIDA PLUMBING CODE. The Florida Plumbing Code as published by the State of Florida, and adopted by the Broward County Board of Rules and Appeals.
POINT OF DELIVERY. The terminal end of service from the public potable water system or reclaimed water system at the meter. This is the point at which the public potable water system loses jurisdiction and sanitary control over the potable water system and the operation of the reclaimed water system becomes the responsibility of the customer.
POLLUTANT. A foreign substance that, if permitted to get into the potable water system, will degrade its quality so as to impair the usefulness or quality of the water to a degree which does not create an actual hazard to the public health but which does adversely and unreasonably affect such water for domestic use.
POTABLE WATER. Water from any source which has been approved for human consumption by the Public Health Unit.
PUBLIC HEALTH UNIT. The health authority having jurisdiction in the county.
RECLAIMED WATER. Water that is flowing out of the city’s water reclamation facility.
RECLAIMED WATER SYSTEM. Facilities consisting of distribution mains, valves and appurtenances used to distribute reclaimed water to customers.
RECLAIMED WATER FACILITIES. All facilities required for the production, storage, transmission, distribution and use of reclaimed water.
WATER SERVICE CONNECTION. The point in the customer’s water system beyond the sanitary control of the
Department; it is generally considered to be the outlet end of the approved backflow device for single-family residential customers and always before any unprotected branch. It is the outlet end of the water meter for all other units.
WATER SERVICE INSTALLATION. The establishment of a new point of delivery, reuse of an existing point of delivery for a new or different customer, or the modification of an existing point of delivery from the city’s potable water system for any customer.
(Ord. 2002-65, passed 9-10-02; Am. Ord. 2005-62, passed 6-28-05; Am. Ord. 2011-59, passed 7-12-11)