cross connection Flashcards
What is a cross connection?
A cross connection is a physical connection between a potable water supply and a non-potable source.
True or False: Cross connections can lead to contamination of drinking water.
True
What is the primary purpose of cross connection control?
To prevent the contamination of potable water systems.
Fill in the blank: Devices that prevent backflow are known as __________.
backflow preventers
What is backflow?
Backflow is the unwanted reverse flow of non-potable water into a potable water supply.
Name one type of backflow preventer.
Reduced pressure zone (RPZ) assembly
True or False: All cross connections are illegal.
False
What is the difference between backpressure and backsiphonage?
Backpressure occurs when the pressure in a non-potable system exceeds that of the potable system; backsiphonage occurs due to negative pressure in the potable system.
What should be done if a cross connection is identified?
It should be eliminated or properly controlled using backflow prevention devices.
What is an air gap?
An air gap is a physical separation between the outlet of a water supply and the flood level of a fixture.
Multiple Choice: Which of the following is NOT a method of cross connection control? A) Air gap B) Backflow preventer C) Direct connection D) Reduced pressure zone
C) Direct connection
What is the role of a cross connection control program?
To identify, eliminate, and control cross connections in water supply systems.
True or False: Cross connection control is only necessary in industrial settings.
False
Fill in the blank: Regular __________ of backflow prevention devices is necessary to ensure their effectiveness.
testing
What kind of facilities typically require cross connection control?
Facilities such as hospitals, laboratories, and industrial plants.
Multiple Choice: Which factor increases the risk of cross connections? A) Proper installation B) Low water pressure C) Regular maintenance D) Public education
B) Low water pressure
What is the purpose of a double check valve assembly?
To prevent backflow in non-health hazard applications.
True or False: Cross connection control is governed by local and national plumbing codes.
True
What is the primary hazard associated with cross connections?
Waterborne disease transmission.
Fill in the blank: The __________ is responsible for enforcing cross connection control regulations in a municipality.
water authority
What are the two main types of backflow preventers?
Atmospheric vacuum breakers and double check valve assemblies.
What does the term ‘health hazard’ mean in the context of cross connections?
A condition that could cause illness or injury due to contamination of drinking water.
True or False: All backflow prevention devices are interchangeable.
False
What is a common indicator of a potential cross connection?
Unusual changes in water pressure or flow.
