BACKFLOW PREVENTION EXAM
QUESTIONS AND ANSWERS
Drinking water standards in the United States were first established by the: -
CORRECT ANSWERS ✅✅ -Public Health Service
Sanitary surveys must be conducted by community water supplies every ________
years - CORRECT ANSWERS ✅✅ -3 years
The AWWA's manual of recommended practice about backflow prevention was first
established in: - CORRECT ANSWERS ✅✅ -1966
The USEPA's Total Coliform Rule contains requirements for: - CORRECT ANSWERS
✅✅ -Cross-connection surveys
At the federal regulartory level, cross-connection control is not a: - CORRECT
ANSWERS ✅✅ -Funded mandate
Under federal law, citizens can sue a water supplier if the quality does not meet: -
CORRECT ANSWERS ✅✅ -Federal Standards
Utilities are responsible for the water's quality to the last: - CORRECT ANSWERS
✅✅ -Free-flowing tap
In 1925, the AWWA determined that_______ were not adequate protection: -
CORRECT ANSWERS ✅✅ -check valves
A federal court can assess a civil penalty for maintaining a hazardous connection of up
to $____ per day. - CORRECT ANSWERS ✅✅ -$15,000
In 1898, a water utility was fined $_____ for supplying poor water. - CORRECT
ANSWERS ✅✅ -$5,000
A pump discharge generating 43 psig (297kPa) will result in a water column height of: -
CORRECT ANSWERS ✅✅ -100 ft. (30.5m) (43x2.31 = 99.33)
At sea level, the maximum vacuum possible is _____psig (kPa). - CORRECT
ANSWERS ✅✅ -33.9 (234)
, For backsiphonage to occur in a piping system, the system must experience a: -
CORRECT ANSWERS ✅✅ -Pressure below atmospheric pressure
A fluid's velocity increase results in a(n): - CORRECT ANSWERS ✅✅ -Reduction in
pressure
To stop a siphon in a potable water system, one must: - CORRECT ANSWERS ✅✅
-Admit air into the system
For fluid to flow, there must be a path and a(n): - CORRECT ANSWERS ✅✅ -
Difference in pressure
Absolute pressure consists of: - CORRECT ANSWERS ✅✅ -Atmospheric + gauge
pressure
Negative gauge pressure may result from: - CORRECT ANSWERS ✅✅ -High
usage
With an equal vacuum applied, a fluid lighter than water will produce a column
elevation: - CORRECT ANSWERS ✅✅ -Higher than water
The base of a water column 20 feet high will produce a pressure of ______ psig (kPa). -
CORRECT ANSWERS ✅✅ -8.7 (60) (20x .433 = 8.66 or 8.7)
The Uniform Plumbing Code states that a direct connection between the potable water
piping and sewer connected waste shall: - CORRECT ANSWERS ✅✅ -Not be
allowed under any condition
According to the Uniform Plumbing Code backflow prevention assembles shall be
tested: - CORRECT ANSWERS ✅✅ -All of the above (repaired, installed, relocated)
According to the Uniform Plumbing Code, vacuum breakers for hose connections in
health care or laboratory areas should be not less than: - CORRECT ANSWERS ✅✅
-72 inches above the floor
The backflow preventer not allowed on an irrigation system is a(n): - CORRECT
ANSWERS ✅✅ -Double check valve assembly
A flushometer vacuum breaker must be installed above the fixture a minimum of _____
inches (cm). - CORRECT ANSWERS ✅✅ -6 (15)
QUESTIONS AND ANSWERS
Drinking water standards in the United States were first established by the: -
CORRECT ANSWERS ✅✅ -Public Health Service
Sanitary surveys must be conducted by community water supplies every ________
years - CORRECT ANSWERS ✅✅ -3 years
The AWWA's manual of recommended practice about backflow prevention was first
established in: - CORRECT ANSWERS ✅✅ -1966
The USEPA's Total Coliform Rule contains requirements for: - CORRECT ANSWERS
✅✅ -Cross-connection surveys
At the federal regulartory level, cross-connection control is not a: - CORRECT
ANSWERS ✅✅ -Funded mandate
Under federal law, citizens can sue a water supplier if the quality does not meet: -
CORRECT ANSWERS ✅✅ -Federal Standards
Utilities are responsible for the water's quality to the last: - CORRECT ANSWERS
✅✅ -Free-flowing tap
In 1925, the AWWA determined that_______ were not adequate protection: -
CORRECT ANSWERS ✅✅ -check valves
A federal court can assess a civil penalty for maintaining a hazardous connection of up
to $____ per day. - CORRECT ANSWERS ✅✅ -$15,000
In 1898, a water utility was fined $_____ for supplying poor water. - CORRECT
ANSWERS ✅✅ -$5,000
A pump discharge generating 43 psig (297kPa) will result in a water column height of: -
CORRECT ANSWERS ✅✅ -100 ft. (30.5m) (43x2.31 = 99.33)
At sea level, the maximum vacuum possible is _____psig (kPa). - CORRECT
ANSWERS ✅✅ -33.9 (234)
, For backsiphonage to occur in a piping system, the system must experience a: -
CORRECT ANSWERS ✅✅ -Pressure below atmospheric pressure
A fluid's velocity increase results in a(n): - CORRECT ANSWERS ✅✅ -Reduction in
pressure
To stop a siphon in a potable water system, one must: - CORRECT ANSWERS ✅✅
-Admit air into the system
For fluid to flow, there must be a path and a(n): - CORRECT ANSWERS ✅✅ -
Difference in pressure
Absolute pressure consists of: - CORRECT ANSWERS ✅✅ -Atmospheric + gauge
pressure
Negative gauge pressure may result from: - CORRECT ANSWERS ✅✅ -High
usage
With an equal vacuum applied, a fluid lighter than water will produce a column
elevation: - CORRECT ANSWERS ✅✅ -Higher than water
The base of a water column 20 feet high will produce a pressure of ______ psig (kPa). -
CORRECT ANSWERS ✅✅ -8.7 (60) (20x .433 = 8.66 or 8.7)
The Uniform Plumbing Code states that a direct connection between the potable water
piping and sewer connected waste shall: - CORRECT ANSWERS ✅✅ -Not be
allowed under any condition
According to the Uniform Plumbing Code backflow prevention assembles shall be
tested: - CORRECT ANSWERS ✅✅ -All of the above (repaired, installed, relocated)
According to the Uniform Plumbing Code, vacuum breakers for hose connections in
health care or laboratory areas should be not less than: - CORRECT ANSWERS ✅✅
-72 inches above the floor
The backflow preventer not allowed on an irrigation system is a(n): - CORRECT
ANSWERS ✅✅ -Double check valve assembly
A flushometer vacuum breaker must be installed above the fixture a minimum of _____
inches (cm). - CORRECT ANSWERS ✅✅ -6 (15)
