BACKFLOW PREVENTION ASSEBLY TEST AND MAINTENANCE FORM:
Assembly Test and Maintenance Form
all forms please submit to https://pawsc.tokaytest.com/
List of Bucks County Certified Testers
Frequently Asked Questions
What is a Cross-Connection?
A cross connection is a physical connection between a possible source of contamination and the public drinking water system. This connection, if not properly protected, can lead to the contamination of the drinking water system through a backflow event. Any service connection is a cross-connection.
What is backflow?
Backflow is the reversal of water through a cross-connection from a possible source of contamination into the public drinking water system. Backflow may be caused by either backpressure or backsiphonage. A loss of pressure in the public drinking water system may lead to bacsiphonage through unprotected cross connections, or backpressure may be created when the water pressure of a facility’s internal water system is elevated above the supply pressure of the public drinking water system resulting in backflow through unprotected cross-connection.
What are backpressure and backsiphonage?
Backsiphonage occurs when the pressure in the public water distribution system (mains) drops below atmospheric pressure and creates a partial vacuum, which could “siphon” contaminates back into the potable water system.
Backpressure occurs when downstream pressure (from within a home or business) is greater than the water pressure supplied by the public water system.
What is a backflow prevention device?
It is a mechanism to prevent backflow- it provides a physical barrier to prevent backflow.
What is a Cross-Connection Control Program?
It is a program desigened to protect the public potable water supply from possibility of contamination by requiring the installation and annual testing of backflow prevention devices.
Where should the backflow device be installed?
Must be installed before the meter.
Do backflow preventers ever need to be tested?
Yes, on a yearly basis.
For more information visit http://www.pawsc.com or call 844-605-5213