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CSWO Exam 2025 /2026 Certified Storm Water Operator
Exam Prep with 100 Questions and Correct Answers from the
CSWO and SESC Comprehensive Training Manual
The term coagulation describes the effect produced when certain chemicals are
added to raw water containing slowly settling or nonsettleable chemicals?
True
False - True
Lower pH values tend to favor positively charged species, which are desirable for
reacting with negatively charged colloids and particulates, forming insoluble flocs
and removing impurities from the water.
True
False - True
The flocculation process provides contact between particles to promote their
gathering together into floc for ease of removal by sedimentation and filtration.
True
False - True
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The size and shape of the flocculation facility influence the detention time needed
for optimum floc development.
True
False - True
Coagulation-flocculation is a posttreatment process for the sedimentation and
filtration processes.
True
False - False
Coagulation-flocculation process performance can be monitored with the aid of
continuous water quality analyzers, which automatically measure a specific water
quality indicator such as turbidity.
True
False - True
In treatment plants where the source water is stored in a large upstream lake or
reservoir, the water quality is generally less stable than water taken directly from
rivers or streams.
True
False - False
CSWO Exam 2025 /2026 Certified Storm Water Operator
Exam Prep with 100 Questions and Correct Answers from the
CSWO and SESC Comprehensive Training Manual
The term coagulation describes the effect produced when certain chemicals are
added to raw water containing slowly settling or nonsettleable chemicals?
True
False - True
Lower pH values tend to favor positively charged species, which are desirable for
reacting with negatively charged colloids and particulates, forming insoluble flocs
and removing impurities from the water.
True
False - True
The flocculation process provides contact between particles to promote their
gathering together into floc for ease of removal by sedimentation and filtration.
True
False - True
, 2|Page
The size and shape of the flocculation facility influence the detention time needed
for optimum floc development.
True
False - True
Coagulation-flocculation is a posttreatment process for the sedimentation and
filtration processes.
True
False - False
Coagulation-flocculation process performance can be monitored with the aid of
continuous water quality analyzers, which automatically measure a specific water
quality indicator such as turbidity.
True
False - True
In treatment plants where the source water is stored in a large upstream lake or
reservoir, the water quality is generally less stable than water taken directly from
rivers or streams.
True
False - False
