Water Distribution Grade 1 Certification ADEQ
Exam 2025/2026 Questions And Answers Graded A+
What is the difference between a reduced pressure principle backflow device and a
double check backflow device? The RP has a ______________.
Relief Valve
What is the maximum time period between having a backflow device tested by a
certified backflow tester? ______________ year.
1
What is the regulatory definition of a cross-connection in a water supply? A
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.
PWS
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?
,Bypass Valve
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: 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.
Coughing
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________.
Lungs
_______________ available chlorine is very effective in killing bacteria.
Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty.
Upright
, If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank.
Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________.
Fatigue
What is the general definition of an ion? An _________ with a positive or negative
charge
Atom
A continuous positive pressure in a distribution system is essential for preventing
what event?
Backflow Event
_____________ water pressure must be maintained to ensure adequate customer
service during peak flow periods. However, minimum positive pressure must be
maintained in mains to protect against backflow or backsiphonage from cross-
connections.
Minimum
Exam 2025/2026 Questions And Answers Graded A+
What is the difference between a reduced pressure principle backflow device and a
double check backflow device? The RP has a ______________.
Relief Valve
What is the maximum time period between having a backflow device tested by a
certified backflow tester? ______________ year.
1
What is the regulatory definition of a cross-connection in a water supply? A
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.
PWS
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?
,Bypass Valve
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: 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.
Coughing
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________.
Lungs
_______________ available chlorine is very effective in killing bacteria.
Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty.
Upright
, If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank.
Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________.
Fatigue
What is the general definition of an ion? An _________ with a positive or negative
charge
Atom
A continuous positive pressure in a distribution system is essential for preventing
what event?
Backflow Event
_____________ water pressure must be maintained to ensure adequate customer
service during peak flow periods. However, minimum positive pressure must be
maintained in mains to protect against backflow or backsiphonage from cross-
connections.
Minimum
