For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACTIVE DATE. The first day that a backflow prevention assembly or backflow prevention method is used to control a cross-connection in each calendar year.
AIR GAP. A physical separation between the free flowing discharge end of a potable water supply pipeline and an open or non-pressure receiving vessel installed in accordance with standard ASME A112.1.2.
BACKFLOW. The undesirable reversal of flow of water or mixtures of water and other liquids, gases or other substances into the public water systems distribution system from any source or sources other than its intended source.
BACKFLOW CONTAMINATION EVENT. Backflow into a public water system from an uncontrolled cross-connection such that the water quality no longer meets the Colorado Primary Drinking Water Regulations, being § 39 of 5 C.F.R. 1002-11, or presents an immediate health and/or safety risk to the public.
BACKFLOW PREVENTION ASSEMBLY. Any mechanical assembly installed at a water service line or at a plumbing fixture to prevent a backflow contamination event; provided that the mechanical assembly is appropriate for the identified contaminant at the cross-connection and is an in-line field-testable assembly.
BACKFLOW PREVENTION METHOD. Any method and/or non-testable device installed at a water service line or at a plumbing fixture to prevent a backflow contamination event; provided that the method or non-testable device is appropriate for the identified contaminant at the cross-connection.
CERTIFIED CROSS-CONNECTION CONTROL TECHNICIAN. A person who possesses a valid backflow prevention assembly tester certification from one of the following approved organizations: American Society of Sanitary Engineering (ASSE) or the American Backflow Prevention Association (ABPA) and must have a valid town contractor’s license and business license. If a certification has expired, the certification is invalid.
CONTAINMENT. The installation of a backflow prevention assembly or a backflow prevention method at any connection to the public water system that supplies an auxiliary water system, location, facility or area such that backflow from a cross-connection into the public water system is prevented.
CONTAINMENT BY ISOLATION. The installation of backflow prevention assemblies or backflow prevention methods at all cross-connections identified within a customer’s water system such that backflow from a cross-connection into the public water system is prevented.
CONTROLLED. Having a properly installed, maintained and tested or inspected backflow prevention assembly or backflow prevention method that prevents backflow through a cross-connection.
CROSS-CONNECTION. Any connection that could allow any water, fluid or gas such that the water quality could present an unacceptable health and/or safety risk to the public, to flow from any pipe, plumbing fixture or a customer’s water system into a public water system’s distribution system or any other part of the public water system through backflow.
MULTI-FAMILY. A single residential connection to the public water system’s distribution system from which two or more separate dwelling units are supplied water.
SINGLE-FAMILY.
(1) A single dwelling which is occupied by a single family and is supplied by a separate service line; or
(2) A single dwelling comprised of multiple living units where each living unit is supplied by a separate service line.
UNCONTROLLED. Not having a properly installed and maintained and tested or inspected backflow prevention assembly or backflow prevention method, or the backflow prevention assembly or backflow prevention method does not prevent backflow through a cross-connection.
WATER SUPPLY SYSTEM. A water distribution system, piping, connection fittings, valves and appurtenances within a building, structure or premises. WATER SUPPLY SYSTEMS are also referred to commonly as premises plumbing systems.
(Ord. 04-2016, passed 1-13-2016)