A cross connection is any real or potential physical connection between Cochrane’s water distribution system and a contamination source. If left unprotected, cross connections may allow contaminated water from soil, storage or other sources to be drawn into the distribution system. This can happen when there’s a drop in water pressure due to a water main break or unexpected high demand, like fire hydrant use.
Backflow prevention
Backflow happens when contaminated water reverses its flow into the clean water supply. Backflow prevention devices stop contaminated water from flowing back into the distribution system.
To protect Cochrane’s water supply, backflow prevention devices must be installed on the following water services:
- non-residential properties
- multifamily residential buildings (four or more units)
- irrigation systems (including residential systems)
How to prevent cross connections at home
You can help protect Cochrane’s water supply from contamination. Even simple connections like a garden hose can create cross-connection risks. Always disconnect garden hoses after using weed and feed dispensers and avoid leaving them submerged in pools of water.
As outlined in the National Plumbing Code of Canada and Cochrane’s Water Utility Bylaw 04/2013, all property owners must:
- Eliminate any potential cross connections where possible.
- Protect connections that can’t be eliminated with an approved backflow prevention device or assembly.
- Have the device tested annually by a certified tester.
- Submit test results to the Town of Cochrane.
Backflow prevention devices must also be tested:
- after initial installation
- following any cleaning, repairs or overhauls
- if the device is relocated
Submitting backflow test reports
Cochrane uses FAST Tester to manage and track backflow prevention reports. To submit results digitally, testers must register for an account. There is an annual fee to use FAST Tester.
Use one of these forms to submit your backflow test results to the Town:
Email reports to: operations@cochrane.ca
Drop off in person: 124 Griffin Rd. Cochrane, AB