For the purpose of this chapter, the following definitions shall apply unless the context indicates or requires a different meaning.
AIR GAP. 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 shall be at least double the diameter of the supply pipe measured vertically above the overflow rim of the vessel, in no case less than one inch (2.54 cm).
APPROVED. The term APPROVED, as herein used in reference to a water supply, shall mean a water supply that has been approved by the health agency having jurisdiction. The term APPROVED is herein used in reference to an air gap, a double check valve assembly, a reduced pressure principle backflow prevention assembly or other backflow prevention assemblies or methods shall mean an approval by the administrative authority having jurisdiction.
APPROVED BACKFLOW PREVENTION ASSEMBLY (ASSEMBLY). Any testable assembly, with the exception of an approved air gap, which has been issued a certificate of approval by the University of Southern California Foundation for Cross-Connection Control and Hydraulic Research (USCFCCCHR or the foundation) or the other third party certifying entity, unrelated to the product's manufacturer or vendor, which may be acceptable to the State Department of Environmental Quality. A list of assemblies shall be maintained by the Utility Superintendent.
AUXILIARY WATER SUPPLY. Any water supply on or available to the premises other than the purveyor's approved public water supply will be considered as an auxiliary water supply. These auxiliary waters may include water from other purveyor's public potable water supply or other natural source(s) such as a well, spring, river, stream, harbor and the like or used waters or industrial fluids. These waters may be contaminated or polluted or they may be objectionable and constitute an unacceptable water source over which the water purveyor does not have sanitary control.
BACK PRESSURE. A form of backflow due to any elevation of pressure in the downstream piping system (by pump, elevation of piping or stream and/or pressure) above the supply pressure at the point of service delivery which would cause, or tend to cause, a reversal of the normal direction of flow through the backflow prevention assembly.
BACK SIPHONAGE. A form of backflow due to a reduction in system pressure which causes a negative or sub-atmospheric pressure to exit at a site in the water system.
BACKFLOW. The undesirable reversal of flow of water or mixtures of water and other liquids, gases or other substances into the distribution system of the public potable water supply.
BACKFLOW PREVENTOR. An assembly or means designed to prevent backflow.
CERTIFIED TESTER. An individual certified to test backflow prevention assemblies by the California-Nevada Section of the American Water Works Association (AWWA), the Arizona State Environmental Technology Training (ASETT) Center or other agencies or organizations involved with the training and certification of testers if they are acceptable to the State Department of Environmental Quality.
COMMON AREA. A recreational or open space area or areas maintained for the benefit of the residents of a housing development which is owned and operated as a single integrated facility.
COMPANY. The town water division.
CONSUMER. The person using water delivered to the premises, building or establishment where used, or for whose account and use the water is delivered, and also the owner, occupant, tenant and lessee of the premises, building or establishment.
CONTAMINATION. An impairment of the quality of the water which creates an actual hazard to the public health through poisoning or through the spread of disease by sewage, industrial fluids, waste and the like.
CONTIGUOUS. In contact at any point along a boundary or part of the same master planned community, two parcels of land are contiguous even if they are separated by one or more of the following: a road, easement or right-of-way.
CROSS CONNECTION. Any unprotected, potential connection or structural arrangement between a public or a customer's potable water system and any other source or system through which it is possible to introduce into any part of the potable water system any used water, industrial fluid, gas or substance other than the intended potable water with which the system is supplied. Bypass arrangements, jumper connections, removable sections, swivel or changeover devices and other temporary or permanent devices through which or because of which backflow can, or may occur, are considered to be CROSS CONNECTIONS. Compliance with the town Plumbing Code creates a rebuttable presumption that a cross connection does not exist.
CROSS CONNECTION CONTROL BY CONTAINMENT. The appropriate type or method of backflow protection at the service connection, commensurate with the degree of hazard of the consumer's potable water system.
CROSS CONNECTIONS CONTROLLED. A connection between a potable water supply system and a non-potable water system with an approved backflow prevention assembly properly installed and maintained so that it will continuously afford the protection commensurate with the degree of hazard.
CUSTOMER. Any person, partnership, association, company, private corporation, public corporation, political subdivision, the United States and the state who receives potable water from the Town of Florence water system or reclaimed wastewater from the town's wastewater system or untreated Central Arizona Project water from town facilities.
DIRECT CROSS-CONNECTION. A cross-connection which is subject to both back siphonage and back pressure.
DIRECTOR. The Public Works Director of the town or his or her authorized deputy, agent, designee or representative.
DWR. The State Department of Water Resources.
GROUNDWATER CODE. The Arizona Groundwater Management Act, A.R.S. Title 45, Chapter 2 (A.R.S. §§ 45-401 et seq.) and any amendments thereto.
HAZARD; DEGREE OF. Either a pollution (non-health) or contamination (health) hazard and is derived from the evaluation of conditions within a system.
HAZARD; HEALTH. An actual or potential threat of contamination of a physical or toxic nature to the public potable water system or the consumer's potable water system that would be a danger to health.
HAZARD; PLUMBING. An internal or plumbing type cross-connection in a consumer's potable water system that may be either a pollutional or a contamination type hazard. This includes, but is not limited to, cross-connections to toilets, sinks, lavatories, wash trays and law sprinkling systems. Plumbing type cross-connections can be located in many types of structures, including homes, apartment houses, hotels and commercial or industrial establishments. Such a connection, if permitted to exist, must be properly protected by an appropriate type of backflow prevention assembly.
HAZARD; POLLUTIONAL. An actual or potential threat to the physical properties of the water system or the potability of the public or the consumer's potable water system, but which would not constitute a HEALTH or SYSTEM HAZARD, as defined. The maximum degree or intensity of pollution to which the potable water system could be degraded under the definition would cause a nuisance or be aesthetically objectionable or could cause minor damage to the system or its appurtenances.
HAZARD; SYSTEM. An actual or potential threat of severe danger to the physical properties of the public or the consumer'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.
INDIRECT CROSS-CONNECTION. A cross-connection which is subject to back siphonage only.
INDUSTRIAL FLUIDS. Any fluid or solution which may be chemically, biologically or otherwise contaminated or polluted in a form or concentration which would constitute a health system, pollutional or plumbing hazard if introduced into an approved water supply. This may include, but not limited to: polluted or contaminated used waters, all types of process waters and “used waters” originating from the public potable water system which may deteriorate in sanitary quality, chemicals in fluid form, plating acid and alkalies, circulated cooling waters connected to an open cooling tower and/or cooling waters that are chemically or biologically treated or stabilized with toxic substances, contaminated natural water such as from wells, springs, streams, rivers, bays, harbors, seas, irrigation canals or systems and the like, oils, gases glycerine, paraffins, caustic and acid solutions and other liquid and gaseous fluids used industrially, for other processes, or for fire fighting purposes.
LOT. A parcel of land or two or more contiguous parcels to be used as a unit.
NET LOT AREA. That portion of a lot excluding all dedicated streets or alleys and roadways or alley easements.
NON-POTABLE WATER.
(1) Reclaimed water, stormwater runoff that is not subject to appropriation under A.R.S. § 45-151;
(2) Water withdrawn pursuant to a poor quality groundwater withdrawal permit pursuant to A.R.S. § 45-516;
(3) Groundwater withdrawn pursuant to type 1 or type 2 non-irrigation certificate of grandfathered right issued by the Department of Water Resources; or
(4) Other non-potable water source of a quality suitable for landscape irrigation, which meets all local, state and federal water quality requirements for full body contact, except untreated Central Arizona Project water.
POINT OF SERVICE DELIVERY. The terminal end of a service connection from the public water system. If a meter is installed at the end of the service connection, then the POINT OF SERVICE DELIVERY shall mean the downstream end (i.e. customer's side) of the meter. If an un-metered connection exists, then the POINT OF SERVICE DELIVERY shall mean at the point of demarcation between the public right-of-way or easements and private property.
POLLUTION. An impairment of the quality of the water to a degree which does not create a hazard to the public health, but which does adversely and unreasonably affect the aesthetic qualities of the waters for domestic use.
POTABLE WATER. Water delivered through the town's domestic water delivery system after treatment designed to meet the Environmental Protection Agency's and State Department of Environmental Quality drinking water standards.
REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTION ASSEMBLY. An assembly containing two independently acting approved check valves together with a hydraulically operating, mechanically independent pressure differential relief valve located between the check valves and at the same time below the first check valve. The unit shall include properly located resilient seated test cocks and tightly closing resilient seated shutoff valves at each end of the assembly. This assembly is designed to protect against a non-health (i.e. pollutant) or health hazard (i.e. contaminant). This assembly shall not be used for backflow protection of sewage or reclaimed water.
SWIMMING POOL. An artificially constructed pool for swimming purposes that meets the applicable design standards and specifications for swimming pools provided by the Department of Health Services.
TOTAL OPERATING FACILITY AREA. An area of land being used for cemetery-related purposes, including any area of land covered by grave markers or by cemetery related buildings, walks, pathways and landscaping, but not including parking lots and any areas of land being held for future expansion of the cemetery.
USED WATER. Any water supplied by the town from the public potable water system to a customer's water system, after it has passed through the point of service delivery.
UTILITY SUPERINTENDENT. The Superintendent in charge of the Water Division of the Public Works Department is invested with the authority and responsibility for the implementation of an effective cross-contamination control program and for the enforcement of the provisions of this division.
WATER APPLICATION RATE. The amount of water applied in a calendar year.
WATER FROM ANY SOURCE. Any water, including reclaimed wastewater from a wastewater treatment facility or cooling tower.
WATER; NON-POTABLE. A water supply which has not been approved for human consumption by the health agency having jurisdiction.
WATER; POTABLE. Any public potable water supply which has been investigated and approved by the health agency. The system must be operating under a valid health permit. In determining what constitutes an approved water supply, the health agency has final judgment as to its safety and potability.
WATER; SERVICE CONNECTION. The terminal end of a service connection from the public potable water system (i.e. where the water purveyor may lose jurisdiction and sanitary control of the water at its point of delivery to the consumer's water system). If a water meter is installed at the end of the service connection, then the service connection shall mean downstream end of the water meter.
WATER; USED. Any water supplied by a water purveyor from a public potable water system to a consumer's water system after it has passed through the service connection, and is no longer under the control of the water purveyor.
(Prior Code, Ch. 18, Art. II, § 18-25) (Ord. 346-04, passed 6-21-2004)