The following definitions shall apply in the interpretation and enforcement of the backflow and cross-connection prevention policy.
   AIR GAP. 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 rim of the receptor.
   ATMOSPHERIC VACUUM BREAKER (AVB). A device with a gravity opening poppet air opening, designed to admit atmosphere into the downstream side of the unit under a no-flow condition, to prevent back siphonage.
   AUTHORIZED REPRESENTATIVE. Any person designated by the Schuyler Department of Utilities to administer their cross-connection policy and ordinance.
   AUXILIARY WATER SUPPLY. Any water used or available for use other than the public water supply.
   BACK PRESSURE. A pressure in a plumbing system greater than the supply pressure that can cause a reversal of flow within that system.
   BACK SIPHONAGE. Backflow induced by a less than atmospheric pressure within a piping system.
   BACKFLOW.  The abnormal reversal of flow in a water system that could allow a foreign material to enter a potable water system.
   BACKFLOW PREVENTION ASSEMBLY APPROVED. A complete assembly, including proper shut-off valves, specifically designed and laboratory tested for performance to prevent the reversal of water flow and that has been accepted for use within the jurisdiction having authority.
   CONSUMER. The owner or person in control of any premises supplied by or in any manner connected to a public water system.
   CONTAINMENT. The protection of the public water supply by installing a cross-connection control device or air gap separation on the water service line to a facility or as an installation within equipment handling potentially hazardous materials.
   CONTAMINATION. Any material that, if it entered a water system, would render it a hazard to human or animal health.
   CROSS-CONNECTION. Any physical link between a potable water supply and any other substance, fluid, or source, which makes possible contamination of the potable water supply, due to the reversal of flow of the water in the piping or distribution system.
   DHHS. The Department of Health and Human Services of the State of Nebraska.
   DOUBLE CHECK VALVE ASSEMBLY. A backflow prevention device consisting of two independently acting check valves, internally force loaded to a normally closed position between two tightly closing shut-off valves, and with means for testing for tightness.
   HAZARD, DEGREE OF. The potential risk to public health and the adverse effect of the hazard upon the potable water system.
      (1)   Health. Any condition, device, or practice in a water system or its operation that creates, a real or potential danger to the health and well-being of the consumer.
      (2)   Plumbing. A plumbing type cross-connection in. a consumer's potable water system that has not been properly protected by a vacuum breaker, air gap, or backflow device.
      (3)   Pollution. The material in question would cause a degradation of potable water by causing taste, odor, or color, but would not present a hazard to health.
      (4)   System. The material in question could cause severe damage in piping and/or appurtenances of a plumbing system if backflow occurred.
   ISOLATION. The practice of installing a cross-connected control device or air gap at every opening from a water distribution system, downstream of the water meter.
   LICENSED PLUMBER. A person who has obtained the appropriate license from the City of Schuyler to perform plumbing related work within the city limits.
   POLLUTION. A material that, if it entered a potable water system, could degrade the esthetic property of the water with taste, color or odor, but would not be hazardous to human or animal health.
   POTABLE WATER. A water proven to be proper for drinking, culinary, or body contact by the health agency in authority.
   PRESSURE VACUUM BREAKER (PVB). A backflow prevention device consisting of a spring loaded check valve, a spring loaded poppet air opening, upstream and downstream resilient shut off valves and two properly located test cocks.
   PUBLIC WATER SUPPLY SYSTEM. A publicly owned water system supplying water to the general public which is satisfactory for drinking, culinary, and domestic purposes and meets the requirements of the Nebraska Department of Health and the drinking water standards.
   REDUCED PRESSURE BACKFLOW PREVENTER (RP). A backflow prevention device consisting of two independently acting check valves, internally force loaded to a normally closed position and separated by an intermediate chamber (or zone) in which there is an automatic relief means of venting to atmosphere internally loaded to a normally open position between two tightly closing shut-off valves and with means for testing for tightness of the checks and opening of relief means.
   SERVICE CONNECTION. The terminal end of a service line from the public water system. If a meter is installed at the end of the service, then the service connection means the downstream end of the meter.
   WATER DEPARTMENT.  A department within the Schuyler Department of Utilities.
(1972 Code, § 3-429) (Ord. 878, passed 5-6-1997; Ord. 2012-03, passed 4-3-2012)