§ 98-403. Definitions.

For the purpose of this article, the following definitions apply unless the context clearly indicates or requires a different meaning. If a word or term used in this article is not contained in the following list, its definition or other technical terms used, shall have the meanings or definitions listed in the most recent adopted edition of the city Plumbing Code and/or the Manual of Cross Connection Control published by the Foundation for Cross Connection Control and Hydraulic Research, University of Southern California. The following definitions shall apply to this article:

Air gap shall mean a physical separation between the free flowing discharge end of a potable water supply piping and/or appurtenance and an open or nonpressure receiving vessel, plumbing fixture or other device. An "approved air-gap separation" shall be at least twice the diameter of the supply pipe measured vertically above the overflow rim of the vessel, plumbing fixture or other device and in no case, less than one inch.

Atmospheric vacuum breaker backflow prevention device or atmospheric vacuum breaker or AVB shall mean a device used to prevent backsiphonage in non-health hazard conditions. This device cannot be tested and cannot prevent backpressure backflow.

Auxiliary supply shall mean any water source or system other than the public water system that may be available in the building or on the property, including ground water or surface waters used for industrial, irrigation or any other purpose.

Backflow prevention assembly or assembly shall mean an assembly to counteract back pressure or prevent backsiphonage.

Backflow shall mean the flow in the direction opposite to the normal flow or the introduction of any foreign liquids, gases, or substances into the water system of the city's water.

Backpressure shall mean any elevation of pressure in the downstream piping system (by any means) above the supply pressure at the point of consideration which would cause, or tend to cause, a reversal of the normal direction of flow and the introduction of fluids, mixtures or substances from any source other than the intended source.

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

Boresight or Boresight to daylight shall mean providing adequate drainage for backflow prevention assemblies installed in vaults through the use of an unobstructed drain pipe.

City or the city shall mean the City of Haltom City or representative.

Commercial establishment shall mean property or location which is used primarily for manufacture, production, storage, wholesaling or retailing of services which is or may be placed in the flow of commerce, or any property or location which is used primarily for the provision of any service.

Commission shall mean the Texas Natural Resource Conservation Commission (TNRCC).

Contaminants shall mean any foreign material, solid or liquid, not common to the potable water supply which makes the water unfit or undesirable for human or animal consumption.

Contamination means the admission of contaminants into the potable water supply system.

Cross-connection shall mean any connection, physical or otherwise, between a potable water supply system and any plumbing fixture or any tank, receptacle, equipment or device, through which it is possible for any nonpotable, used, unclean, polluted and contaminated water, or other substances, to enter into any part of such potable water system under any condition or set of conditions.

Cross-connection control device shall mean any nationally approved or recognized device placed upon any connection, physical or otherwise, between a potable water supply system and any plumbing fixture or any tank, receptacle, equipment or device, which is designed to prevent nonpotable, used, unclean, polluted and contaminated water, or other substances, from entering into any part of such potable water system under any condition or set of conditions.

Customer service inspection shall mean an inspection designed to inspect and detect any actual or potential cross-connection hazards and/or exceed of the lead action level in solder or flux, pipe or pipe fittings.

Degree of hazard shall mean the low or high hazard classification that shall be attached to all actual or potential cross-connections.

(1)

Health hazard means 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.

(2)

High hazard means the classification assigned to an actual or potential cross-connection, that potentially could allow a substance that may cause illness or death, to backflow into the potable water supply.

(3)

Low hazard means the classification assigned to an actual or potential cross-connection, that potentially could allow a substance that may be objectionable but not hazardous to one's health, to backflow into the potable water supply.

(4)

Pollution hazard means 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. Maximum degree of intensity of pollution which the potable water system could be degraded under this definition would cause a nuisance or be aesthetically objectionable, or could cause damage to the system or its appurtenances.

(5)

System hazard means an actual or potential threat of severe danger to the physical properties of the public or consumer's potable water supply, or of a pollution or contamination that would have a detrimental effect on the quality of the potable water in the system.

Director shall mean the water utilities manager or his designee who is vested 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.

Double check detector backflow prevention assembly or double check detector or DCDA shall mean an assembly composed of a line-size approved double check assembly with a bypass containing a specific water meter and an approved double check valve assembly. The meter shall register accurately for very low rates of flow.

Double check valve backflow prevention assembly or double check assembly or double check or DC shall mean an assembly which consists of two independently acting, approved check valves, including tightly closing resilient seated shutoff valves attached at each end of the assembly and fitted with properly located resilient seated test cocks.

Fireline tester shall mean a tester who is employed by an state approved fireline contractor and is qualified to test backflow prevention assemblies on firelines only.

General tester shall mean a tester who is qualified to test backflow prevention assemblies on any domestic, commercial, industrial or irrigation service; except firelines.

Mobile unit shall mean any operation which may have the potential to introduce contaminants into a potable water system from a mobile source. These include, but are not limited to: carpet cleaning vehicles, water-hauling vehicles, street-cleaning vehicles, liquid-waste vehicles, power-wash operations, and pest-control vehicles.

Nonresidential use shall mean water used by any person other than a residential customer of the water supply, and include all uses not specifically included in "residential uses".

Person shall mean any individual, partnership, associations, corporations, firms, clubs, trustees, receivers, and bodies politic or corporate.

Point-of-use isolation shall mean the appropriate backflow prevention within the consumers water system at the point at which the actual or potential cross-connection exists.

Potable water supply shall mean any water supply intended or used for human consumption or other domestic use.

Premises shall mean any piece of property to which water is provided; including all improvements, mobile structures, and structures located on it.

Premises isolation shall mean the appropriate backflow prevention at the service connection between the public water system and the water user.

Pressure vacuum breaker backflow prevention assembly or pressure vacuum breaker or PVB shall mean an assembly which provides protection against backsiphonage, but does not provide adequate protection against backpressure backflow. The assembly is a combination of a single check valve with an AVB, and can be used with downstream resilient seated shutoff valves. In addition, the assembly has suction and discharge gate valves and resilient seated test cocks which allow the full testing of the assembly.

Public water system or system shall mean any public or privately owned water system which supplies water for public domestic use. The system will include all services, reservoirs, facilities, and any equipment used in the process of producing, treating, storing, or conveying water for public consumption.

Reduced pressure principle backflow prevention assembly or reduced pressure principle assembly or RP assembly or RP shall mean an assembly containing two independently acting approved check valves together with a hydraulically-operated, mechanically independent pressure differential relief valve located between the check valves, and at the same time below the first check valve. The assembly shall include properly located resilient seated test cocks and tightly closing resilient seated shutoff valves at each end of the assembly.

Reduced pressure principle detector backflow prevention assembly or reduced pressure detector or RPDA shall mean an assembly composed of a line-size approved reduced pressure principle assembly with a bypass containing a specific water meter and an approved reduced pressure principle backflow prevention assembly. The meter shall register accurately for very low rates of flow.

Regulatory authority shall mean any municipal officer or department of the city, appointed by the city manager to administer this article.

Representative of the water system shall mean a person designated by the city to perform cross-connection control duties that shall include, but are not limited to, cross-connection inspections and water use surveys.

Residential use shall mean water used by any residential customer of the water supply and include single family dwellings, duplexes, multiplex, housing and apartments where the individual units are each on a separate meter; or, in cases where two or more units are served by one meter, the units are full-time dwellings.

Service connection shall mean the point of delivery which the water purveyor losses control of the water.

Spill-resistant pressure vacuum breaker or SVB shall mean an assembly containing an independently operating, internally loaded check valve and independently operating, loaded air inlet valve located on the discharge side of the check valve. This assembly is to be equipped with a properly located resilient seated test cock and tightly closing resilient seated shutoff valves attached at each end of the assembly.

Tester shall mean a person that is a certified backflow prevention assembly technician approved by and registered with the city and the TNRCC.

Thermal expansion shall mean heated water that does not have the space to expand.

TNRCC shall mean the Texas Natural Resource Conservation Commission.

Used water shall mean water supplied by a public water system to a water user's system after it has passed through the service connection.

Water use survey shall mean a survey conducted or caused to be conducted by the local authority designed to identify any possible source's of contamination to the potable water supply.

(Ord. No. O-98-057-11, § 1, 1-11-99)