Water Distribution Grade 1 Certification ADEQ
Practice Exam
1. What is the general definition of an ion? An with a positive or
negative charge
Answer Atom
2. A continuous positive pressure in a distribution system is essential for pre-
venting what event?
Answer Backflow Event
3. water pressure must be maintained to ensure adequate cus-
tomer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage
from cross-connections.
Answer Minimum
4. Name the most common CAUSE for public water supply contamination.
or cross-connection
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,Answer Backflow
5. What does a backsiphonage condition usually cause? pressure or
negative pressure on the service or supply side.Answer Reduced
6. What does a double check valve backflow assembly provide effective protec-
tion from? Both backpressure and backsiphonage of .
Answer Pollution
7. What is equipment that utilizes water for cooling, lubrication, washing or as
a solvent always susceptible to?Answer Cross-Connection
8. What is the difference between a reduced pressure principle backflow device
and a double check backflow device? The RP has a .
Answer Relief Valve
9. What is the maximum time period between having a backflow device tested
by a certified backflow tester? year.
Answer 1
10. What is the regulatory definition of a cross-connection in a water supply? A
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, physical connection between a public water system and any source of water or
other substance that may lead to contamination of the water provided by the
through backflow.Answer PWS
11. What is the name of a type of valve that reduces the differential pressure
across a closed disk making the main valve easier to open and close?
Answer Bypass Valve
12. As soon as Cl2 gas enters the throat area, a victim will sense a sudden
stricture in this area-Nature's way of signaling to prevent passage of the gas
to the lungs. At this point, the victim must attempt to do two things
Answer get out of the area of the leak, proceeding upwind, and to take only
very short breaths through the mouth. Normal breathing will cause , which
must be prevented if possible.
Answer Coughing
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Practice Exam
1. What is the general definition of an ion? An with a positive or
negative charge
Answer Atom
2. A continuous positive pressure in a distribution system is essential for pre-
venting what event?
Answer Backflow Event
3. water pressure must be maintained to ensure adequate cus-
tomer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage
from cross-connections.
Answer Minimum
4. Name the most common CAUSE for public water supply contamination.
or cross-connection
1/
26
,Answer Backflow
5. What does a backsiphonage condition usually cause? pressure or
negative pressure on the service or supply side.Answer Reduced
6. What does a double check valve backflow assembly provide effective protec-
tion from? Both backpressure and backsiphonage of .
Answer Pollution
7. What is equipment that utilizes water for cooling, lubrication, washing or as
a solvent always susceptible to?Answer Cross-Connection
8. What is the difference between a reduced pressure principle backflow device
and a double check backflow device? The RP has a .
Answer Relief Valve
9. What is the maximum time period between having a backflow device tested
by a certified backflow tester? year.
Answer 1
10. What is the regulatory definition of a cross-connection in a water supply? A
2/
26
, physical connection between a public water system and any source of water or
other substance that may lead to contamination of the water provided by the
through backflow.Answer PWS
11. What is the name of a type of valve that reduces the differential pressure
across a closed disk making the main valve easier to open and close?
Answer Bypass Valve
12. As soon as Cl2 gas enters the throat area, a victim will sense a sudden
stricture in this area-Nature's way of signaling to prevent passage of the gas
to the lungs. At this point, the victim must attempt to do two things
Answer get out of the area of the leak, proceeding upwind, and to take only
very short breaths through the mouth. Normal breathing will cause , which
must be prevented if possible.
Answer Coughing
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26
