ADMINISTRATIVE AUTHORITY. Designated town representative in responsible charge of administrating, reviewing, enforcing, and/or inspecting any work, public or private, within the jurisdiction of the town. Any consultant, construction manager, or technical expert specifically designated for the purpose of enforcement of the ordinances and construction specifications required by the town.
AIR-GAP SEPARATIONS. 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 the receptacle. An APPROVED AIR GAP SEPARATION shall be at least double the diameter of the supply pipe measured vertically above the top rim of the vessel; in no case shall the gap be less than one inch.
APPROVED. In reference to a water supply system or backflow prevention device (or method), shall mean one that has been approved and tagged by the appropriate regulatory agency.
AUXILIARY SUPPLY. Any water source or system other than the public water supply that may be available in the building or premises.
BACK PRESSURE. Backflow caused by a pump, elevated tank, boiler, or other means that could create pressure within the system greater than the supply pressure.
BACKFLOW. The flow of any foreign liquids, gases, or substances in the distributing pipe lines of a potable supply of water. Backflow may occur under two conditions: pressure greater than atmospheric (See BACK PRESSURE), and pressure that is subatmospheric (See BACKSIPHONAGE).
BACKFLOW PREVENTION DEVICE, APPROVED. A device that has been investigated and approved by the state Department of Environmental Management, Drinking Water Branch, and the town Water Utility.
BACKFLOW PREVENTION DEVICE TESTER, CERTIFIED. A person who is qualified to test backflow prevention devices and has proven his competency to the satisfaction of the appropriate regulatory agency.
BACKSIPHONAGE. A form of backflow due to a negative or subatmospheric pressure within a water system.
CHECK VALVE, APPROVED. As used in cross connection control, means a check valve of substantial construction and suitable materials that is positive in closing and permits no leakage in a direction reverse to the normal flow.
CONTAMINATION. An impairment of the quality of the public water supply by the presence of any foreign substance (organic, inorganic, radiological, or biological) to a degree which creates a hazard to the public health through poisoning or through the spread of disease (see POLLUTION) or creates a nuisance condition such as discoloration, staining, tastes, or odors.
CROSS CONNECTION. Any physical connection or arrangement between two otherwise separate systems, one of which contains potable water from the town water system, and the other, water from a private source, water of unknown or questionable safety, or stream, gases, or chemicals, whereby there may be a flow from one system to the other.
DOUBLE CHECK VALVE ASSEMBLY, APPROVED. An assembly composed of two single, independently acting, approved check valves, located at each end of the assembly and suitable connections for testing the water-tightness of each check valve.
HAZARD, HEALTH. Any condition, device, or practice in a water supply system and its operation that creates, or may create, a danger to the health and well-being of a consumer.
HAZARD, PLUMBING. A cross connection in a consumer's potable water system that may permit backsiphonage in the event of a negative pressure in the supply line. (Unprotected plumbing-type cross connections are considered to be health hazards. They include, but are not limited to, faulty connections to fixtures such as toilets, sinks, tubs, lavatories, wash trays, and domestic washing machines.)
IDEM. Indiana Department of Environmental Management, Drinking Water Branch.
INDUSTRIAL FLUIDS. Any fluid or solution that may chemically, biologically, or physically degrade the approved water supply.
INDUSTRIAL PIPING SYSTEM, CONSUMER'S. A system used by a consumer for the transmission or storage of anything (fluid, solid, or gas) other than the water supply intended or used for human consumption or food processing. (Such a system would include all pipes, conduits, tanks, receptacles, fixtures, equipment, and appurtenances used to produce, convey, or store substances that are or may be polluted.)
LABORATORY, APPROVED TESTING. One that is approved by the appropriate health agency and the town Water Utility and is properly staffed and equipped with pumps, meters, measuring devices, and other equipment to test and evaluate fully a backflow prevention device for design, materials, construction, and operation.
NON-POTABLE WATER. Water not safe for drinking, personal, or culinary use.
PERSON. Any person, firm, association, organization, partnership, trust, or associations of persons, joint venture, corporation, or company, and includes the United States, the State of Indiana, and any officer or agent thereof.
POLLUTION. The presence in water of any foreign substance (organic, inorganic, radiologic, or biologic) that tends to degrade its quality so as to constitute a hazard or to impair its potability or usefulness.
POTABLE WATER. Water that is safe for drinking, personal, or culinary use.
PREMISES. Integrated land area including improvements thereon undivided by public thoroughfares or water distribution mains where all parts of the land area are operated under the same management and for the same purpose.
PRIVATE LINE. A separate water piping system serving water-using devices, with a backflow preventer of air gap separation on this line at the point of takeoff from the potable water line.
PROTECTIVE DEVICES. Any of the following devices:
(1) Air gap separation;
(2) Approved double check valve assembly; or
(3) Approved reduced-pressure-principle backflow prevention device.
REDUCED-PRESSURE-PRINCIPLE BACKFLOW PREVENTION DEVICE. A device containing a minimum of two independently acting, approved check valves, together with an automatically operated pressure differential relief valve located between the two check valves. During normal flow and at the cessation of normal flow, the pressure between these two checks shall be less than the upstream (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 at less than the supply pressure. The unit must include tightly closing shutoff valves located at each end of the device, and each device shall be fitted with properly located test cocks.
SERVICE CONNECTION or POINT OF DELIVERY. The terminal end of a service from the public water supply - that is, where the town Water Utility loses jurisdiction and sanitary control over the water at its point of delivery to the consumer's water system. The town Water Utility's part of service connection ends at the discharge side of the curb valve. If a curb valve is not present, the connection ends at the property line.
THERMAL EXPANSION. Expansion caused by heating or cooling of a liquid, solid, or gas.
TOWN WATER UTILITY. The owner or operator of the public water supply.
WATER DELIVERED or DELIVERED WATER. Any water supplied by a town Water Utility or from a public water supply to a consumer's water system after it has passed the point of delivery and is no longer under the sanitary control of the public water supplier.
WATER SUPPLY, APPROVED. Any public or consumer's potable water supply that has been investigated and approved by the town Water Utility or the Indiana Department of Environmental Management, (IDEM), Drinking Water Branch. In determining what constitutes an approved water supply, the Indiana Department of Environmental Management shall have the final judgement as to its safety and potability.
WATER SYSTEM, CONSUMER’S. Any water system, potable or non-potable, located on the consumer’s premises, whether supplied by a town Water Utility or an auxiliary water system.
('80 Code, § 13.010)