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All posts tagged backflow prevention device

Business man and woman confused about Toronto's Backflow Prevention Program.

People tend to take the water supply for granted. You turn on a faucet, and clean, drinkable water comes out. You find no reason to be concerned. Of course, if the water made you sick or had a strange look, smell or taste, then you might want some answers.

The reason that we have this good supply of clean water is because the City of Toronto goes to great lengths to ensure that the water is clean and safe. In guaranteeing this supply of clean water, the city has to protect the water supply from contaminants. In its efforts to protect the water supply, the local government has to ensure that the water supply is protected from backflow.

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a translucent backwater valve sitting on a white space before being installed in home

Backwater valves prevent outbound water from re-entering a structure from which it was ejected, called “back-flowing.” They are a kind of backflow prevention device. This may be due to excess water outside, as caused by a flood, or a blockage of the pipes from the outside, potentially caused by sewage or dirt. It may also be caused when there is excess rainwater and falling precipitation, and the city’s sewer lines are unable to handle so much fluid. Back-flowing mostly occurs in basements, but it also may occur on the first floor if the house is situated in a low area. Read more


backflow prevention device in the desert

Plumbing inside our homes is complicated and convoluted, but that’s only the tip of the iceberg. Once you start looking at how a private residence’s water supply is connected to the public water supply, things start to get very complicated. The movement of water between homes and public supplies must be carefully regulated and controlled for a number of reasons, chief among them being the quality of the water entering homes. Read more