Whenever used in this article, the following terms shall have the meaning given to them in this section.
AIR GAP SEPARATION. The unobstructed vertical distance through the free atmosphere between the lowest opening of any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the receptacle. 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 receptacle and, in no case less than one inch.
ANTI-SIPHON VACUUM BREAKER. A device which restricts the backflow of water into a potable water system by a simple check valve. The vacuum is broken by allowing air to enter upstream of the check valve.
APPROVED BACKFLOW PREVENTION DEVICE. A backflow prevention device that has been manufactured in full conformance with the most current edition of standards established by the American Water Works Association and tested by the Foundation for Cross-Connection Control and Hydraulic Research, University of Southern California, Los Angeles, California.
AUXILIARY WATER SYSTEM. Any water supply system available to the premises other than the public water supply system and includes the water supplied by such system. An AUXILIARY WATER SYSTEM may include water from another consumer’s public water supply system, polluted or contaminated water, process fluids, used water, or other sources of water which the consumer of the public water supply system does not have sanitary control.
BACKFLOW. The flow of water or other liquids, mixtures, or substances into the water distribution system from any other source than the intended source of the potable water supply.
BACKFLOW PREVENTION DEVICE. Any device, method, or type of construction intended to prevent backflow into a potable water system.
CITY MANAGER. The City Manager of the City of Scottsbluff, Nebraska and any person or persons designated by the City Manager to carry out the provisions of this article.
CONSUMER. The owner or person in control of any premises supplied by or in any manner connected to a public water supply system.
CONSUMER’S WATER SUPPLY SYSTEM. Any water supply system located on the consumer’s premises, supplied by or in any manner connected to a public water supply system. The team shall include a household plumbing system and a fire suppression system.
CONTAMINATION. An impairment of the quality of the potable water to a degree which creates an actual hazard to the public health through poisoning or through spread of disease.
CROSS-CONNECTION. Any arrangement whereby contamination of the public water supply system due to backflow or back-siphonage can occur.
DEGREE OF HAZARD. A term derived from an evaluation of the potential risk to health and the adverse effects upon the potable water system.
DOUBLE CHECK VALVE ASSEMBLY. An assembly composed of two single, independently acting, check valves including 100% closing shut-off ball valves or resilient seat gate valves located at each end of the assembly and suitable connections for testing the water-tightness of each check valve.
HEALTH HAZARD. Any condition, device, or practice in a water system or its operation that creates, a real or potential danger to the health and well-being of the consumer.
LICENSED PLUMBER. A person who has obtained a master plumber’s license from the city.
PERSON. The state, any political subdivision, public or private corporation, individual, partnership, or other legal entity. The singular includes the plural, and the male pronoun includes the female.
PLUMBING HAZARD. A plumbing type cross-connection in a consumer’s potable water system that has not been properly protected by air gap separation or backflow prevention devices.
POLLUTION. An impairment of the quality of the potable water to a degree which does not necessarily cause an actual hazard to the public health but which does adversely and unreasonably affect such waters for any desired use.
POLLUTION HAZARD. A condition through which an aesthetically objectionable or degrading material not dangerous to health may enter the public water supply system or the consumer’s water supply system.
POTABLE WATER. Water which is satisfactory for drinking, culinary, and domestic purposes and meets the requirements of the Nebraska Department of Health.
PUBLIC WATER SUPPLY SYSTEM. A water supply system designed and intended to provide potable water to designated consumers. The water supply shall include the water supply source and distribution piping network. The water supply source is defined as any artificial or natural accumulation of water used to supply the potable water system. The distribution piping network includes all piping, plumbing, and treatment devices used to convey an adequate quality and quantity of potable water to the consumer.
REDUCED PRESSURE ZONE BACKFLOW PREVENTION DEVICE. A device containing a minimum of two independently acting internally loaded check valves together with an automatically operated pressure differential relief valve located between two check valves, “four properly located test cocks and two isolation valves”. During normal flow and at the cessation of normal flow, the pressure between these two 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 check valves at less than the supply pressure. The unit must include 100% closing shut-off ball valves or resilient seat gate valves located at each end of the device, and each device shall be fitted with properly located test cocks.
SERVICE CONNECTION. The terminal end of a service line from the public water system. If a meter is installed at the end of the service, then the service connection means the downstream end of the meter.
SYSTEM HAZARD. A condition posing an actual or potential threat of damage to the physical properties of the public or the consumer’s water supply system.
USED WATER. Any water supplied by the public water supply system to a consumer’s water supply system after it has passed through the service connection and is no longer under the sanitary control of the city.
(Ord. 3261, passed - -1992)