WATER DISTRIBUTION GRADE 1 CERTIFICATION ADEQ
PRACTICE EXAM 2025: 100+ QUESTIONS AND 100% VERIFIED
ANSWERS|GRADED A+ | GUARANTEED PASS!!
_____________ 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.
- answer-Minimum
_______________ available chlorine is very effective in killing bacteria.
- answer-Free
A continuous positive pressure in a distribution system is essential for preventing
what event?
- answer-Backflow Event
According to Arizona State Rule, an "air-gap separation" means a physical
separation between the discharge end of a supply pipe and the top rim of its
receiving vessel, which has a separation distance equal to at least?
- answer-1 inch or twice the diameter of the supply pipe, whichever is greater.
According to Arizona State Rule, this term means 1 of the family of organic
compounds, named as derivatives of methane, wherein 3 of 4 hydrogen atoms in
methane are substituted by a halogen atom in the molecular structure.
- answer-Trihalomethanes
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.
- answer-Coughing
At which type of facility is a remote operator allowed to operate?
- answer-Any Grade 1 or Grade 2 facility
, At which type of facility is a remote operator allowed to operate? Any Grade 1 or
Grade 2 __________________.
- answer-Facility
At which type of facility is an on-site operator mandatory? All grade _____ and
grade _________ facilities.
- answer-3 & 4
Before beginning an excavation, who should be contacted to assist in determining
the location of all underground utilities in the work are? An "underground Service
Alert" center, "One Call Center" or ____________________, all three of these are
the same.
- answer-Bluestake
Centrifugal pumps do not generate suction unless the impeller is submerged in
water. If a pump is located above the level of water what must be provided on the
suction piping to hold the prime?
- answer-Foot Valve
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________.
- answer-Lungs
Define the term "Water Hammer." A _________________ in a pipeline resulting
from the rapid increase or decrease in water flow.
- answer-Pressure Surge
Explain statements concerning confined space entry?
- answer-May be required. To ventilate the confined space. Operators are not
required to wear SCBAs unless there is an atmospheric condition that requires
SCBA. Atmospheric monitoring must be performed. Other hazards may be present,
for example hazardous energy, or engulfment. A permit required confined space
will require signage and three persons present to enter the space.
Explain the procedures concerning a confined space safety procedure?
- answer-The concentration of oxygen should range between 19.5 percent to 23.5
percent before entering. A self-contained breathing apparatus may be necessary.
Radio contact with a supervisor does not need to be continuous. All persons
entering the tank must have a safety harness.
PRACTICE EXAM 2025: 100+ QUESTIONS AND 100% VERIFIED
ANSWERS|GRADED A+ | GUARANTEED PASS!!
_____________ 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.
- answer-Minimum
_______________ available chlorine is very effective in killing bacteria.
- answer-Free
A continuous positive pressure in a distribution system is essential for preventing
what event?
- answer-Backflow Event
According to Arizona State Rule, an "air-gap separation" means a physical
separation between the discharge end of a supply pipe and the top rim of its
receiving vessel, which has a separation distance equal to at least?
- answer-1 inch or twice the diameter of the supply pipe, whichever is greater.
According to Arizona State Rule, this term means 1 of the family of organic
compounds, named as derivatives of methane, wherein 3 of 4 hydrogen atoms in
methane are substituted by a halogen atom in the molecular structure.
- answer-Trihalomethanes
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.
- answer-Coughing
At which type of facility is a remote operator allowed to operate?
- answer-Any Grade 1 or Grade 2 facility
, At which type of facility is a remote operator allowed to operate? Any Grade 1 or
Grade 2 __________________.
- answer-Facility
At which type of facility is an on-site operator mandatory? All grade _____ and
grade _________ facilities.
- answer-3 & 4
Before beginning an excavation, who should be contacted to assist in determining
the location of all underground utilities in the work are? An "underground Service
Alert" center, "One Call Center" or ____________________, all three of these are
the same.
- answer-Bluestake
Centrifugal pumps do not generate suction unless the impeller is submerged in
water. If a pump is located above the level of water what must be provided on the
suction piping to hold the prime?
- answer-Foot Valve
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________.
- answer-Lungs
Define the term "Water Hammer." A _________________ in a pipeline resulting
from the rapid increase or decrease in water flow.
- answer-Pressure Surge
Explain statements concerning confined space entry?
- answer-May be required. To ventilate the confined space. Operators are not
required to wear SCBAs unless there is an atmospheric condition that requires
SCBA. Atmospheric monitoring must be performed. Other hazards may be present,
for example hazardous energy, or engulfment. A permit required confined space
will require signage and three persons present to enter the space.
Explain the procedures concerning a confined space safety procedure?
- answer-The concentration of oxygen should range between 19.5 percent to 23.5
percent before entering. A self-contained breathing apparatus may be necessary.
Radio contact with a supervisor does not need to be continuous. All persons
entering the tank must have a safety harness.
