Backflow” is the reversal of the normal course of water through a water route like pipe or drain.When backflow occurs, contaminants in non-potable sources such as drains and sewages or chemical fertilizer-infused water from garden irrigation supply get into the water supply through cross-connection posing a great health risk to yourself and your family. A cross-connection is any connection between drinking water supply and sources of non-potable water. Controlling cross-connection is very important for ensuring safe and clean drinking water in home or offices. Everest Plumbing and Drain is an old, certified name associated with backflow prevention Toronto.
Backflow is often the result of one of following these two ways:
Back-pressure: Back-pressure occurs when the pressure on the customer’s side of the connection is greater than City’s water supply system, and this deferential pressure ( the difference between greater and lower pressure) pushes water back into the main water supply system.
See More http://www.everestplumbing.ca/backflow-prevention/
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