Backflow Prevention
Device Inspection, Inc.

1-602-788-5411

24 Hour Emergency Service Available
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Where are the devices installed?

The devices are installed on the City’s water supply line as close as possible to the customer’s water meter and/or internally on any equipment that utilizes water that potentially may become contaminated such as boilers, carbonators, cooling towers, x-ray machines, etc.

What is Backsiphonage?

The positive flow of water can be reversed when there is a sudden reduction in water pressure in the distribution system, such as during firefighting or when a water main breaks.  This can create a suction effect, drawing the non-potable substance into the potable water system.

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