Show/Hide
Skip to page body Home What's New About Us Government Services I Want To...

FREQUENTLY ASKED QUESTIONS

water tap running
Q. What is a cross-connection?  
Q. What is a CCC Program? 

Q. What is a backflow condition? 
Q. What is backpressure backflow? 
Q. What is backsiphonage backflow?
Q. What is a backflow preventer? 
Q. What is Premise Isolation? 
Q. What if I do not comply? 

A cross-connection is a connection or potential connection between any part of a potable (drinking) water system and any other environment containing other substances in a manner that, under any circumstance, would allow such substances to enter the potable water system. 

back to top

Q. What is a CCC Program?

An approved CCC program is an organized, legally implemented and structured program to eliminate and control all actual or potential cross connections to the municipal potable (drinking) water supply. This includes selection, installation, testing and maintenance of backflow prevention device. 

back to top

Q. What is a backflow condition?

The undesirable reversal of flow in to a potable water distribution system as a result of a cross-connection. There are two types of backflow: backpressure and backsiphonage. 

back to top

Q. What is backpressure backflow?

Backpressure backflow is backflow caused by a downstream pressure that is greater than the upstream (supply) pressure. Pumps can create increases in downstream pressure; temperature increases in boilers, etc. 

back to top


Q. What is backsiphonage backflow?

Backsiphonage is backflow caused by a negative pressure (a vacuum) in a potable water system.

back to top

Q. What is a backflow preventer? 

A backflow preventer is a means or mechanism to prevent backflow. 

back to top

Q. What is Premise Isolation?
Premise Isolation is Backflow Protection provided at the service entrance into a building or facility.Documents and their sections that reference Premise Isolation include:the City of Medicine Hat Premise Isolation Policy

National Plumbing Code of Canada - Section 6.2.61)
In addition to a backflow preventer required by this subsection for buildings or facilities where potentially a severe health hazard may be caused by backflow, a potable water system shall be provided with premise or zone installation by a reduced pressure principal backflow preventer.

CSA B64.10-07 - Manual for the Selection and Installation of Backflow Prevention Devices - Section 4.3.4 - Premises Isolation 4.3.4.1 When required by Clause 4.3.1.2 or 4.3.1.3, premises isolation for a building shall be required even if the water distribution system in the building conforms to the current plumbing or building code requirements, because backflow into the public water supply can still occur if the individual protection fails.

back to top

Q. What if I do not comply?

If a business or facility refuses to comply with the City of Medicine Hat's Cross Connection Control Program, their water will be shut-off. All businesses, commercial, industrial and institutional facilities within the City of Medicine Hat are required to have appropriate premise backflow protection. All testable backflow preventers within a facility must be tested when installed and annually by a Registered Cross Connection Control Tester. The installation of the appropriate device at its location will be verified when your facility is inspected by the Safety Codes or Cross Connection Control Officer to assist in identifying with the requirements for backflow protection in your facility.Registered Testers and local plumbers are also knowlegable regarding the City of Medicine Hat CCC Program. They may provide their assistance towards installation of appropriate backflow prevention devices and testing.

back to top

Free viewers are required for some of the attached documents.
They can be downloaded by clicking on the icons below.

Download Acrobat Reader Download Flash Player Download QuickTime Download Windows Media Player Download Microsoft Silverlight Download Word Viewer Download Excel Viewer Download PowerPoint Viewer
Last updated: 2/1/2017 10:59:53 AM