Water Distribution Practice Exam Grade 3
& 4 Tempe, AZ questions and answers with
solutions 2025/2026
What is the definition of "operator"? - ANSWER Operator has the same
meaning as certified operator.
Within how many days must a certified operator notify the Department
(in writing) that the operator either ceases or commences operation of
another facility? - ANSWER 10 days
At which type of facility is a remote operator allowed to operate? -
ANSWER Any Grade 1 or Grade 2 facility
How close must the remote operator of a facility be to the facility to
legally operate the facility? - ANSWER Within 200 miles by ground travel.
What is the inspection frequency that a remote operator must inspect a
grade 1 or grade 2 water treatment plant or distribution system that
produces groundwater? - ANSWER As often as necessary, but no less
than monthly.
,Upon expiration of an operator certificate, how many days does an
operator have to reinstate the certificate without retaking an
examination? - ANSWER 90 days
What is an initial monitoring year? - ANSWER The calendar year
designated by the Department within a compliance period in which a
public water system conducts initial monitoring at a point of entry.
What is the reporting limit for all regulated VOC's? - ANSWER 0.0005
mg/L
Who is allowed to conduct a sanitary survey? - ANSWER A representative
of the Department or a professional engineer or sanitarian who is
registered in Arizona and approved by the Department.
Under what circumstances may the Department reduce monitoring
frequency for nitrate at a surface water sampling point and what is the
reduced frequency? - ANSWER If the analytical results are < 5 mg/L for 4
consecutive quarters then reduce sampling frequen cy from quarterly to
annually.
Which type of system is not required to sample for VOC's? - ANSWER
Transient Non-community Water System.
What contaminants does the monitoring assistance program monitor? -
ANSWER IOCs, VOCs, and SOCs.
, What types of public water system must comply with Article 6, Capacity
Development Requirements for a New Public Water System? - ANSWER
Community water systems and non-transient non-community water
systems that begin operations on or after October 1, 1999
To become a new public water system, an owner shall file an elementary
business plan for review and approval by the Department. What three
elements make up the elementary business plan? - ANSWER Technical
Capacity, Managerial Capacity, and Financial Capacity.
What is the definition of an "on-site representative"? - ANSWER On-site
representative means a person located at a facility who monitors the
daily operation at the facility and maintains contact with the remote
operator regarding the facility.
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
& 4 Tempe, AZ questions and answers with
solutions 2025/2026
What is the definition of "operator"? - ANSWER Operator has the same
meaning as certified operator.
Within how many days must a certified operator notify the Department
(in writing) that the operator either ceases or commences operation of
another facility? - ANSWER 10 days
At which type of facility is a remote operator allowed to operate? -
ANSWER Any Grade 1 or Grade 2 facility
How close must the remote operator of a facility be to the facility to
legally operate the facility? - ANSWER Within 200 miles by ground travel.
What is the inspection frequency that a remote operator must inspect a
grade 1 or grade 2 water treatment plant or distribution system that
produces groundwater? - ANSWER As often as necessary, but no less
than monthly.
,Upon expiration of an operator certificate, how many days does an
operator have to reinstate the certificate without retaking an
examination? - ANSWER 90 days
What is an initial monitoring year? - ANSWER The calendar year
designated by the Department within a compliance period in which a
public water system conducts initial monitoring at a point of entry.
What is the reporting limit for all regulated VOC's? - ANSWER 0.0005
mg/L
Who is allowed to conduct a sanitary survey? - ANSWER A representative
of the Department or a professional engineer or sanitarian who is
registered in Arizona and approved by the Department.
Under what circumstances may the Department reduce monitoring
frequency for nitrate at a surface water sampling point and what is the
reduced frequency? - ANSWER If the analytical results are < 5 mg/L for 4
consecutive quarters then reduce sampling frequen cy from quarterly to
annually.
Which type of system is not required to sample for VOC's? - ANSWER
Transient Non-community Water System.
What contaminants does the monitoring assistance program monitor? -
ANSWER IOCs, VOCs, and SOCs.
, What types of public water system must comply with Article 6, Capacity
Development Requirements for a New Public Water System? - ANSWER
Community water systems and non-transient non-community water
systems that begin operations on or after October 1, 1999
To become a new public water system, an owner shall file an elementary
business plan for review and approval by the Department. What three
elements make up the elementary business plan? - ANSWER Technical
Capacity, Managerial Capacity, and Financial Capacity.
What is the definition of an "on-site representative"? - ANSWER On-site
representative means a person located at a facility who monitors the
daily operation at the facility and maintains contact with the remote
operator regarding the facility.
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
