APPROVED BACKFLOW PREVENTION ASSEMBLY. An assembly approved by both the State Department of Human Services and the city for preventing backflow occurrences.

AUXILIARY WATER SUPPLY. Any supply of water used to augment the supply obtained through the city’s water system which serves the premises in question.

BACKFLOW. The flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any sources other than its intended source, and is caused by backsiphonage or backpressure.

BACKFLOW PREVENTION ASSEMBLY. Any city or state approved assembly used to prevent backflow into a potable water system. The types of assemblies include: double-check valve assemblies, pressure vacuum breaker assemblies, reduced pressure principle assemblies, air gap separation and spill resistant vacuum breakers.

CROSS-CONNECTION. Any unprotected actual or potential connection or structural arrangement between a public or a 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. Bypass 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.

IRRIGATION SYSTEM. A metered connection intended for seasonal use and delivering water which is not discharged into the sanitary sewerage system.

PUBLIC HEALTH HAZARD. A condition, device or practice which is conducive to the introduction of water-borne disease organisms, or harmful chemical, physical or radioactive substances into a public water system, and which represents an unreasonable risk to health.

SAFE DRINKING WATER. Water which has sufficiently low concentrations of microbiological, inorganic chemical, organic chemical, radiological or physical substances so that individuals drinking such water at normal levels of consumption will not be exposed to disease organisms or other substances which may produce harmful physiological effects. (Ord. 2008-01, passed 02/11/2008)