Each day, our Water & Sewer Utility provides customers with clean, safe drinking water on demand.
One of the many ways we keep our drinking water safe is through ensuring Cross Connection Control (CCC) devices are maintained.
As per the City of Fredericton By-law No. W-2, A By-law Relating to the Water and Sewer Systems, the City of Fredericton requires CCC devices to be serviced regularly and tested annually (by a City of Fredericton licensed tester) to ensure they continue operating efficiently.
What is a cross connection?
A cross connection, as per the City of Fredericton By-law No. W-2, A By-law Relating to the Water and Sewer Systems, is a connection or potential connection between any part of the potable (drinking) water system and any other environment containing other substances in a manner which, under any circumstances, could allow such substance to enter the potable water system.
What is a Cross Connection Control device?
A CCC device protects your drinking water from contamination from back siphonage and backpressure.
Back siphonage is backflow caused by reduced pressure in the supply piping.
Common causes of back siphonage:
- High velocities in pipelines.
- Water main repair or break that is lower than a service point.
- Lowered water main pressure due to high water withdrawal from firefighting or water main flushing.
Backpressure may cause backflow when a potable system is connected to a non-potable water supply that is operating under high pressure by means of a pump or booster. There is a high risk the non-potable water may be forced into the potable system whenever these interconnections are not properly protected.
Common causes of backpressure:
- Booster pumps.
- Interconnections with another liquid system operated at a higher pressure.
- Elevated piping (i.e., 30' above finished grade)
For more information, contact Service Fredericton at 506-460-2020 or firstname.lastname@example.org.
Related documents and helpful links:
- City of Fredericton Permits: Plumbing Permits for the Cross Connection Control device. All plumbing codes require the potable water system to be protected from backflow.
- City of Fredericton By-law requirements:
- See the Standards Council of Canada for the Manual for the Selection and Installation of Backflow Prevention Devices/Manual for the Maintenance and Field Testing of Backflow Prevention Devices CAN/CSA-B64.10:17/CSA B64.10:17 (R2021).