§ 98-322. Definitions.

Unless a provision explicitly states otherwise, the following terms and phrases, as used in this article, shall have the meanings hereinafter designated. If a word or term used in this article is not contained in the following list, it shall have the definition provided for such word or term in the ninth edition of the Manual of Cross Connection Control published by the Foundation for Cross Connection Control and Hydraulic Research, University of Southern California.

Approved backflow prevention assembly (or backflow assembly or assembly) means an assembly to counteract backpressure or prevent backsiphonage. This assembly must appear on the list of approved assemblies issued by the City of Fort Worth Water Department.

Auxiliary supply means any water source or system other than the public water system, that may be available in a building or on a property.

AVB means atmospheric vacuum breaker.

Backflow means:

(1)

The flow in the direction opposite to the normal flow; or

(2)

The introduction of any foreign liquids, gases, or substances into the public water system.

Boresight (or boresight to daylight) means providing adequate drainage for backflow prevention assemblies installed in vaults through the use of an unobstructed drain pipe.

Commission (or T.N.R.C.C.) means the Texas Natural Resource Conservation Commission and its successor agencies.

Contamination means the presence in or entry into a public water supply system of any substance which may be deleterious to the public health and/or the quality of the water.

Cross connection means any physical arrangement where a potable water supply is actually or potentially connected with any nonpotable water system, used water system or auxiliary water supply, sewer, drain conduit, swimming pool, storage reservoir, plumbing fixture, swamp cooler, air conditioning unit, fire protection system, or any other assembly which contains, or may contain, contaminated water, sewage, or other liquid of unknown or unsafe quality which may be capable of imparting contamination to the public water system as a result of backflow. Bypass arrangements, jumper connections, removable sections, swivel or change over assemblies, or other temporary or permanent assemblies through which, or because of which, backflow may occur are considered to be cross connections.

DC means double check valve backflow prevention assembly.

DDC means double detector check valve assembly.

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

Department means the Water Department of the City of Saginaw.

Director means the city's director of public works and the directors authorized representatives.

Double check valve backflow prevention assembly (or double check assembly or double check) means an assembly which consists of two independently operating check valves which are spring loaded or weighted. The assembly comes complete with a gate valve on each side of the checks, as well as test cocks to test the checks for tightness.

Drinking water means water distributed for human consumption, for use in preparing food or beverages, or for use in cleaning a utensil or article used in preparing food or beverages for, or consuming food or beverages by, human beings.

Health hazard means an actual or potential threat or contamination of a physical or toxic nature dangerous to health to the public potable water system or a consumer's potable water system.

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

Human consumption means uses by humans in which water can be ingested into or absorbed by the human body. Examples of these include, but are not limited to, drinking, cooking, brushing teeth, bathing, washing hands, preparing foods, and washing dishes, utensils, and other articles used in the preparation or consumption of food.

Inspector means a person that is a certified cross connection inspector employed by or under contract with the city.

Low hazard means the classification assigned to a cross connection that could potentially allow a substance that may be objectionable but not hazardous to a person's health to backflow into the potable water supply.

Nonresidential use shall include all uses not specifically included in "residential use."

Plumbing code means the city's current adopted issue of the Uniform Plumbing Code.

Plumbing hazard means an internal or plumbing-type cross connection in a consumer's potable water system that may be either a pollution or contamination hazard.

Point of use isolation means the appropriate backflow prevention within a consumer's water system at the point at which a cross connection exists.

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

Premise isolation means the appropriate backflow prevention at the service connection between the public water system and the water user.

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

Public water system means any public or privately owned water system which supplies water for human consumption. The system includes all services, reservoirs, facilities, and equipment used in the process of producing, treating, storing, or conveying water for public consumption.

PVB means pressure vacuum breaker.

Reduced pressure principle back-flow prevention assembly (or reduced pressure assembly or RIP assembly or RP) means 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 test cocks and tightly closing shut-off valves at the end of the assembly.

Residential use means 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 means the point of delivery at which the water purveyor loses control of the water.

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

Tester means a person who is a certified backflow prevention assembly technician approved and registered with the director.

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

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

(Ord. No. 97-14, § 2, 6-17-97)