Water supply systems are susceptible to contamination if water flows in the reverse direction of piping systems. This is known as backflow and can be prevented with proper cross connection equipment.
To keep Whistler's drinking water standards as high as possible and prevent backflow contamination, the Resort Municipality of Whistler (RMOW) is in the process of implementing a Cross Connection Control Program.
The contractor Maintenance Tracking Systems Inc. (MTS) will be contacting industrial, commercial and institutional operators in Whistler from July to October 2014 to conduct assessments on their water system connections.
The assessments will:
- Provide users with recommendations on how to improve their cross connection systems
- Determine if a user’s existing backflow prevention device is in compliance with the British Columbia Plumbing Code
- Be provided at no charge
The RMOW thanks operators in advance for their cooperation.
Understanding Cross Connection and Backflow
- Cross connection means any actual or potential connection between the drinking water system and another water source, such as a pool or irrigation system.
- Backflow is the flow of water in the direction opposite to normal or intended flow. High risk hazards for backflow are more common with industrial, commercial and institutional operators, whereas low risk hazards are typically found in residential neighbourhoods.
- A backflow prevention device is a mechanical apparatus that prevents backflow. Three common examples are an air gap, a vacuum breaker or a double check valve.
- Council presentation – Cross Connection Control Program (February 5, 2013)
- Council report - Cross Connection Control Program (February 5, 2013)