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Cross Connection Control Program

In Calgary, some homes and businesses have cross connection devices at their properties.

This device prevents water that has been used for washing, heating and cooling from flowing into our drinking water.

The City of Calgary oversees annual testing and compliance of these devices in order to protect Calgary's drinking water supply from contamination.

Seasonal Irrigation Note:

As per the Water Utility Bylaw section 39.3e: "A test must be performed at the time the system is turned on at the beginning of each irrigation season."


I have a cross connection testing letter

If you received a letter, you need to have your cross connection device tested by a certified tester who is registered with the City of Calgary.

After testing is completed, the tester should submit the report to our office in 30 days. Check with your tester to make sure the report was filed with us and that you have received a copy of the test report.

If you need to do the following:

  • Check if we received your report;
  • Require an extension;
  • Advise you no longer own or live at the address

Please contact 311 or submit an online service request.

Cross connection resources

To learn more about cross connection devices, home owner and business responsibilities, and certifications and renewals for cross connection testers, please visit the resources below:

For more information on cross connection guidelines, see:

If you have other questions for the program team, please contact 311 or submit an online service request.

A representative will respond to you within five business days.