Cross Connection Control Program
To protect the quality of drinking water supplied to residents served by FVRD water systems and ensure that potential sources of contamination are eliminated or prevented, the FVRD has implemented a Cross Connection Control Program.
Bylaw 1177, 2012 [PDF - 76 KB], supports this program, allowing for the regulation of cross connections for all water systems owned and/or operated by the FVRD.
A cross connection is any temporary or permanent connection between the drinking water system and a source of non-potable (contaminated/polluted) water. Examples of cross connections include irrigation and sprinkler systems, piping between the public water system and a cooling system, and something as simple as a garden hose left in a sink or pool.
Typically, water flows in one direction from the drinking water system into a building. Under certain circumstances, such as a water main break, negative pressure can be created, causing water to flow in the opposite direction. This is called backflow. If a cross connection exists, backflow can cause contaminated water to flow back through the drinking water system, which can result in dangerous health risks.
To prevent water from backflowing into the water distribution system, there are several backflow prevention devices that can be installed on cross connections. Most residential properties connected to an FVRD water system have dual check valves installed in conjunction with their water meter assemblies, providing premise isolation. For commercial connections, one of the following backflow prevention devices may be required to protect the water distribution system from contamination:
- Dual Check Valve
- Double Check Valve
- Hose Connection Vacuum Breaker
- Reduced Pressure Assembly
- Approved Air Gap