Backflow Prevention
At EOS Mechanical Inc, we are committed to educating our clients and community about backflow prevention to help protect our water and ensure compliance.
What is Backflow Prevention?
Backflow prevention ensures that water flows in the right direction, preventing contamination from non-potable sources and keeping your water clean and safe. Here’s some helpful information to understand what backflow prevention is and why it’s crucial for the safety of your water supply.
What is a Cross-Connection?
A cross-connection is a direct or potential link between clean water and a source of contamination.
Common Cross-Connections:
- Water softener drains linked to a sanitary sewer.
- Chemical sprayers without backflow preventers.
- High-pressure washers without backflow protection.
- Lawn irrigation systems lacking proper backflow preventers.
- Hoses used to clear blockages in toilets and sewer lines.
- Photo development equipment.
- Auxiliary water supplies connected to municipal systems.
- Toilets without anti-siphon float valves.
What is Backflow?
Backflow occurs when water flows in the opposite direction, caused by back siphonage or back pressure.
What is a Backflow Preventer?
A backflow preventer stops reverse water flow. Some models require regular testing, while others do not.
What Causes Backflow?
Backflow can happen during water main repairs when the water flow is stopped, causing it to reverse. If cross-connections exist, contaminants can enter the system.
What is Backflow?
Backflow occurs when water flows in the opposite direction, caused by back siphonage or back pressure.
What is a Backflow Preventer?
A backflow preventer stops reverse water flow. Some models require regular testing, while others do not.
What Causes Backflow?
Backflow can happen during water main repairs when the water flow is stopped, causing it to reverse. If cross-connections exist, contaminants can enter the system.
Backflow Prevention Programs & By-laws in Ontario
Municipalities or water providers across Ontario manage individual cross-connection control programs. Regulations vary by region. EOS Mechanical can guide you through local requirements.
If you received a compliance notice, please contact us.
Where to Find More Information on Cross-Connection Control:
- CAN/CSA-B64.10-11 & CAN/CSA-B64.10.1-11 Standards
- Manual for Selection and Installation of Backflow Prevention Devices
- Manual for Maintenance and Testing of Backflow Prevention Devices
- Ontario Building Code – Part 7 (Plumbing)
- EPA’s Cross Connection Control Manual
- AWWA Canadian Cross Connection Control Manual
If you received a compliance More details can be found on the Ontario Water Works Association Website.