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CWEA Advanced Treatment Technologies Exam
Practice Questions And Correct Answers||Verified
Exam!! (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
What term is used to describe a water source developed
for military use? - Answer-Water point
The ion exchange unit removes which of the following
undesirable properties of water? - Answer-Manganese and
lead
Moisture is held beneath the surface of the earth in what
total number of zones? - Answer-Three
You should reduce the water treatment rate when the
outside temperature reaches what level? - Answer-45°F
What water test kit does medical use to check a water
source for chemical contamination? - Answer-M272
,2|Page
What minimum treatment is required for collected
rainwater that is to be used as a water source? - Answer-
Filtration and disinfection
What minimum amount of residual chlorine is considered
significant? - Answer-0.1 ppm
When you are using copper sulfate to treat a lake,
concentrations of organisms should never exceed how
many parts per million to protect the lives of fish? -
Answer-2
A water source with a pH value less than what number is
an indication of possible CBR contamination? - Answer-6
In a driven well, the sections of well pipe are delivered in
lengths of what size? - Answer-5 feet
A temporary water source should not be converted into a
permanent water source until after what activity has taken
place? - Answer-An area search for a source requiring
less development
,3|Page
A well that is hand dug usually 3 feet in diameter or more
is within what depth range? - Answer-20 feet to 40 feet
What is the name of the process whereby latent heat is
removed and steam becomes water? - Answer-
Vaporization
To guard against subsurface contamination, you should
locate rainwater catchment areas at what minimum
distance from possible sources of contamination? -
Answer-100 feet
Dissolved gases can be removed from a water supply by
what means? - Answer-Aeration
When developed properly, springs yielding a minimum of
how many gallons per minute can be used as a source of
field water? - Answer-20
A total of how many cubic feet of snow is required to
produce 1 cubic foot of water? - Answer-5
, 4|Page
The pump and power unit used for testing a well should be
capable of continuous operation for a minimum of how
many hours? - Answer-24
What are the two classifications of water impurities? -
Answer-Suspended or dissolved
Which of the following types of sand provides the greatest
rate of flow during drawdown? - Answer-Coarse sand with
grains nearly uniform in size
What type of treatment is used in residual disinfection as
the final step in the water treatment process? - Answer-
Chlorination
Compute the quantity of water in a lake that is 100 feet
long, 20 feet wide, has an average depth of 6 feet, and no
run off. - Answer-90,000 gallons
There is a total of how many classifications of wells? -
Answer-Five
CWEA Advanced Treatment Technologies Exam
Practice Questions And Correct Answers||Verified
Exam!! (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
What term is used to describe a water source developed
for military use? - Answer-Water point
The ion exchange unit removes which of the following
undesirable properties of water? - Answer-Manganese and
lead
Moisture is held beneath the surface of the earth in what
total number of zones? - Answer-Three
You should reduce the water treatment rate when the
outside temperature reaches what level? - Answer-45°F
What water test kit does medical use to check a water
source for chemical contamination? - Answer-M272
,2|Page
What minimum treatment is required for collected
rainwater that is to be used as a water source? - Answer-
Filtration and disinfection
What minimum amount of residual chlorine is considered
significant? - Answer-0.1 ppm
When you are using copper sulfate to treat a lake,
concentrations of organisms should never exceed how
many parts per million to protect the lives of fish? -
Answer-2
A water source with a pH value less than what number is
an indication of possible CBR contamination? - Answer-6
In a driven well, the sections of well pipe are delivered in
lengths of what size? - Answer-5 feet
A temporary water source should not be converted into a
permanent water source until after what activity has taken
place? - Answer-An area search for a source requiring
less development
,3|Page
A well that is hand dug usually 3 feet in diameter or more
is within what depth range? - Answer-20 feet to 40 feet
What is the name of the process whereby latent heat is
removed and steam becomes water? - Answer-
Vaporization
To guard against subsurface contamination, you should
locate rainwater catchment areas at what minimum
distance from possible sources of contamination? -
Answer-100 feet
Dissolved gases can be removed from a water supply by
what means? - Answer-Aeration
When developed properly, springs yielding a minimum of
how many gallons per minute can be used as a source of
field water? - Answer-20
A total of how many cubic feet of snow is required to
produce 1 cubic foot of water? - Answer-5
, 4|Page
The pump and power unit used for testing a well should be
capable of continuous operation for a minimum of how
many hours? - Answer-24
What are the two classifications of water impurities? -
Answer-Suspended or dissolved
Which of the following types of sand provides the greatest
rate of flow during drawdown? - Answer-Coarse sand with
grains nearly uniform in size
What type of treatment is used in residual disinfection as
the final step in the water treatment process? - Answer-
Chlorination
Compute the quantity of water in a lake that is 100 feet
long, 20 feet wide, has an average depth of 6 feet, and no
run off. - Answer-90,000 gallons
There is a total of how many classifications of wells? -
Answer-Five
