Operator Test Prep – Complete Practice Questions and Answers
for Water Distribution Certification Preparation
Introduction:
This document contains practice questions and precise answers for
the ADEQ Water Distribution Grade 1 Certification Exam. It covers
essential topics including water distribution systems, backflow
prevention, chlorine safety, pumps, valves, water quality,
regulations, confined space safety, excavation procedures, and
operator certification requirements.
The material is designed to help operators prepare for certification
exams through direct question-and-answer review. It also includes
Arizona-specific regulatory requirements and operational standards
relevant to Grade 1 water distribution facilities.
Exam Questions and Answers
Water hammer exerts tremendous force on a system and can be
highly ___________________. --- correct precise answer ---
Destructive
How should a water meter that is removed from service for repair
be handled? ________________ the meter to retain water. ---
correct precise answer ---Seal
,Name the three main classifications of water meters. Compound,
Displacement, and __________________. --- correct precise answer
---Velocity
Peak day demand is the greatest amount of water used for any one
_______________ in a calendar year. --- correct precise answer ---
Day
What negative effect does a water meter have on a service?
____________ loss may occur. --- correct precise answer ---Head
Name the 4 broad categories of water quality. Physical,
___________________, biological, radiological. --- correct precise
answer ---Chemical
What are disease causing organisms such as bacteria and viruses
called? --- correct precise answer ---Pathogens
What does a positive bacteriological sample indicate? The
_______________ of bacteriological contamination --- correct
precise answer ---Presence
What is the name of the area from which surface runoff is carried
away by a single drainage system? --- correct precise answer ---
Watershed
, What is an advantage of a "wet tap" vs. a "dry tap?" You do not
need to ________________ the water line down. --- correct precise
answer ---Down or turn off
What is the most likely type of symptom one could expect upon
exposure to a very small percentage of chlorine in the air? A
_________________ sensation in the eyes and throat. --- correct
precise answer ---Burning
What must an operator ensure when installing a pressure vacuum
breaker backflow device? It must be at least ___________ inches
about the highest downstream outlet. --- correct precise answer ---
12 inches
What is the definition of "operator"? --- correct precise 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? --- correct precise
answer ---10 days
At which type of facility is a remote operator allowed to operate? --
- correct precise answer ---Any Grade 1 or Grade 2 facility