§ 53.31  DEFINITIONS.
   For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   BACKFLOW. The undesirable reversal of water or mixtures of water and other liquids, gases, or other substances into the distribution pipes of the potable supply of water from any source or sources.
   BACKFLOW PREVENTION DEVICE (APPROVED). A device that has been investigated and approved by the regulatory agency having jurisdiction. The approval of backflow prevention devices by the regulatory agency should be on the basis of a favorable laboratory and field evaluation report by an approved testing laboratory recommending the approval.
   BACKFLOW PREVENTION DEVICES (TYPE). Any approved device used to prevent backflow into a potable water system. The type of device used should be based on the degree of hazard either existing or potential.
   CITY. The City of Glendale.
   CONTAMINATION. The entry into or presence in a public water supply system of any substance which may be deleterious to health and/or quality of the water.
   CROSS-CONNECTION. Any unprotected actual or potential connection or structural arrangement between a public or consumer’s potable water system and any other source or system through which it is possible to introduce into any part of the potable system any used water, industrial fluid, gas, or substance other than the intended potable water with which the system is supplied. By-pass 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.
   HAZARD, DEGREE OF. Derived from the evaluation of a health, system, plumbing, or pollutional hazard.
   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, domestic washing machines, and lawn sprinkling systems. Plumbing type cross-connections can be located in many types of structures, including homes, apartment houses, hotels, and commercial or industrial establishments.
   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 of intensity of pollution of which the potable water system could be degraded under this 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 consumer’s potable water system or a pollution or contamination which would have a protected effect on the quality of the potable water in the system.
   HEALTH DIVISION OFFICER. The Oregon State Health Division Office, or authorized agent.
   MANAGER. The City Utility Manager of the City of Glendale.
   POTABLE WATER SUPPLY. Any system of water supply intended or used for human consumption or other domestic use.
(Ord. 319, passed 10-10-1994)