Backflow in a drinking water system is when normal water flow to a customer’s property is interrupted and the flow reverses direction. This can happen by accident through hazardous connections to the water pipe system, known as a cross connection.
A cross connection is a water line connection between a drinking water system and any source of potentially contaminated water. Areas where cross connections can occur include:
- Secondary water supplies (pond water)
- Cooling towers
- Fire sprinkler systems
- Boiler systems
- Laboratory equipment (medical and industrial)
- Lawn irrigation systems
- Solar heating tanks
- Swimming pools
- Water re-circulating systems
- “Green” building systems or ECO friendly
- Processing tanks
Why is Backflow a Problem?
When backflow occurs, contaminates such as chemicals, pathogens and non-drinkable water may be drawn back into the City water supply system contaminating water people drink.
This hazardous situation can be avoided with the proper installation of a backflow prevention device. Installation is relatively inexpensive and is necessary to safeguard our drinking water supply.
Backflow Prevention By-law
The City of Greater Sudbury’s Backflow Prevention By-law requires the installation and regular maintenance of backflow prevention devices within the City. You must comply with the Backflow Prevention By-law if you are:
- An Industrial/Commercial/Institutional (ICI) customer
- A high risk residential property owner in the City of Greater Sudbury
If you are unsure if this applies to you, please see our Backflow Prevention By-law.
Backflow Prevention Forms
To comply with the Backflow Prevention By-law, complete the following at your own expense:
- Complete an information request form for your property identifying the owner of the system.
Cross Connection Control Survey
Complete a cross connection control survey of the water system on your property. This survey must be completed by an authorized professional and updated once every five years or whenever there is a significant change in property use.
Cross Connection Control Survey Report Form (PDF, 127 KB)
Annual Device Testing
Have your backflow prevention device(s) tested each year by a qualified professional and submit these records to the City. Testable backflow devices include: double check valve assemblies, reduced pressure assemblies and pressure vacuum breakers and more.
Backflow Preventer Test and Inspection Report Form (PDF, 111 KB)
Register all your backflow prevention devices with the City and get a certified inspection tag before installation. You can get the inspection tag from the Compliance office by emailing firstname.lastname@example.org.
Make Regular Upgrades
Make regular upgrades, replacements, and/or repairs to any backflow prevention devices and submit these records to the City.
Device Upgrade Implementation Report Form (PDF, 118 KB)
Backflow Preventer Removal Report Form (PDF, 131 KB)
All forms/reports related to the Backflow Prevention By-law must be completed and endorsed by the qualified professional and the property owner before you submit them to the City.
How to Choose the Appropriate Backflow Prevention Device
Consult with a qualified plumbing contractor to determine which backflow prevention device is appropriate for your property. Backflow prevention devices must meet the Canadian Standards Association approval.
What Is Your Responsibility?
You are responsible for complying with the City’s Backflow Prevention By-law.
All plumbing work and inspections, including cross connection surveys, backflow prevention device installation, testing and maintenance must be conducted by a qualified person.
See a list of qualified professionals who are licensed to perform these tasks. (PDF, 323 KB)
Compliance Is Mandatory
The Backflow Prevention By-law is administered and enforced by Water/Wastewater Compliance Services.
Compliance Officers are authorized to enter, inspect, monitor and obtain records from ICI facilities and residential properties within the municipality.
The Compliance Officers can also provide assistance and information to you about backflow prevention to help you comply with the by-law.
Failure to comply with the By-law may result in legal action and fines issued. It is every property owner’s responsibility to ensure compliance with the By-law.
Customers who do not comply may be fined between $10,000 and $20,000 per day, while Corporations are liable for a fine between $50,000 and $100,000 per day.
To learn more about the City of Greater Sudbury’s Backflow Prevention By-law call 311 or email email@example.com.