We test and repair Cross Connection Control devices in the City of
Calgary as per the City Water Bylaw 40M2006. We are certified
AWWA - Western Canadian section and registered with the City of Calgary
as a backflow / cross connection control device specialist.
Pricing: $105.00 for the first device. $85 for each
We do the following:
- Annual Backflow Testing
- Repair of Backflow devices
- Backflow Device Installation
- Double Check Valve Assembly Testing
- Cross Connection Control Device Specialist
- Back Flow Preventers
- Backflow Solutions
do cross connection control devices need to be tested?
control devices have internal seals, springs and moving parts that are
subject to fouling, wear or fatigue; therefore, all cross-connection
control devices have to be tested to ensure they are functioning
is a cross-connection?
cross-connection is a temporary or permanent link between a potable
(drinking) water system and any source containing non-potable water or
other substances from which backflow may occur.
include the piping between a public water system, or a citizen's water
system and a heating or cooling system, fire system or irrigation
is a cross-connection control device?
cross-connection control device is a mechanical device that prohibits
backflow of water into the public drinking water. The main
types of cross-connection control devices are the reduced-pressure
principle assembly, the pressure vacuum breaker assembly, the
double-check valve assembly and registered Air Gaps. Examples of
secondary types of devices are the hose connection
atmospheric vacuum breakers and residential dual check valves.
City of Calgary's website.
is the undesirable reversal of non-potable (untreated) water (or other
substances) through an unprotected cross-connection and into the piping
of a public water system or a citizen's drinking water system.
are two causes of backflow:
reversal of normal flow in a system caused by a vacuum in the supply
piping. This can also happen if there is an interruption of the water
supply due to nearby fire-fighting, repairs or breaks in the water
reversal of normal flow in a system due to pressure higher than the
supply pressure. This happens when there is an increase in downstream
pressure caused by pumps, temperature increases in boilers, elevated
tanks or other pressure-producing systems.
regulations related to backflow and cross-connections include
Plumbing Code and
the Alberta Amendments to the National Plumbing Code.
The City of Calgary's website.