Texas Wastewater Class A Exam comprehensive questions
and verified answers ACTUAL EXAM 2025 TEST!! Graded A+
| 2025|2026 EXAM UPDATE
What type of fire extinguisher Class A Class C (a and d)
would be
used on an electrical control
panel that has been de-
energized?
Disinfection with chlorine is 6.0
the most effective at a pH
of
The biomass on a normal Grey to brown and 0.05 to 0.1 inch thick
functioning RBC has what
appearance?
The sludge from a primary 4% to 6%
clarifier should percent
solids?
What is eutrophication in a Enrichment with nitrogen and phosphorous Causes algae blooms
pond system? (b and c)
How often should pH Daily
meters be calibrated?
In Texas, pH meters are two
required to be calibrated on
how many buffers?
An industrial complex has a 2941
BOD discharge to the POTW
of 500 pounds per day.
The
population equivalent of this
industry is 500 lbs = 2,941
0.17 lbs BOD person
The parameters of the BOD 5 days at 20° Centigrade
test are
,Standard Dimension Ratio in Ratio of OD pipe diameter to wall thickness
pvc pipe is defined as
How should shoring be up from the bottom up
removed from a trench?
In low pressure sewer part of the collection system and the responsibility of the utility
systems where each tap
must have a grinder pump
lift station, station is
considered to be
Effective communication being a good listener
depends on
When designing a 50
wastewater collection
system, the engineer
considers the
population for how many
years in the future?
According to 30 TAC Chapter 150
317, all pipe and fittings
used in wastewater
pressure
shall have a minimum psi
pressure rating of
The minimum velocity 2.0 fps
of flow in a
wastewater line
should be
At a construction job site, as increase
the roadway speed
increases, the spacing
between cones and
barricades should
The major cause of roots and grease
wastewater line stoppages
is
, Carbon monoxide (CO) tightness in the chest nausea drowsiness and headache (all of the
poisoning symptoms are above)
The smallest pipe size for 1 inch
air recirculation of a self-
priming centrifugal pump
is
Dangerous gases in a some gases have no odor some gases may deaden the
confined space may not be sense of smell some gases may displace the oxygen
detected with the physical (all of the above)
senses because
What are the dangerous CO2 CO НaS CH4 (all of the above)
gases a collection system
worker might come into
contact with?
On a construction job site, 10
equipment booms must
maintain at least how many
feet of clearance from
overhead electric lines?
How should trench shoring be to above the top of the trench
installed?
When setting work goals for accompanied by an action plan
an employee, the goals
should be
According to Chapter 317, the manhole is completely watertight and tested for no leakage
Design Criteria, a manhole
can be installed within 9
feet of an existing
waterline if
As the population of a decrease
collection system
increases, the ratio of peak
flow to average daily flow
will
Motivating workers to do a letting workers participate in setting goals
better job is best done by
and verified answers ACTUAL EXAM 2025 TEST!! Graded A+
| 2025|2026 EXAM UPDATE
What type of fire extinguisher Class A Class C (a and d)
would be
used on an electrical control
panel that has been de-
energized?
Disinfection with chlorine is 6.0
the most effective at a pH
of
The biomass on a normal Grey to brown and 0.05 to 0.1 inch thick
functioning RBC has what
appearance?
The sludge from a primary 4% to 6%
clarifier should percent
solids?
What is eutrophication in a Enrichment with nitrogen and phosphorous Causes algae blooms
pond system? (b and c)
How often should pH Daily
meters be calibrated?
In Texas, pH meters are two
required to be calibrated on
how many buffers?
An industrial complex has a 2941
BOD discharge to the POTW
of 500 pounds per day.
The
population equivalent of this
industry is 500 lbs = 2,941
0.17 lbs BOD person
The parameters of the BOD 5 days at 20° Centigrade
test are
,Standard Dimension Ratio in Ratio of OD pipe diameter to wall thickness
pvc pipe is defined as
How should shoring be up from the bottom up
removed from a trench?
In low pressure sewer part of the collection system and the responsibility of the utility
systems where each tap
must have a grinder pump
lift station, station is
considered to be
Effective communication being a good listener
depends on
When designing a 50
wastewater collection
system, the engineer
considers the
population for how many
years in the future?
According to 30 TAC Chapter 150
317, all pipe and fittings
used in wastewater
pressure
shall have a minimum psi
pressure rating of
The minimum velocity 2.0 fps
of flow in a
wastewater line
should be
At a construction job site, as increase
the roadway speed
increases, the spacing
between cones and
barricades should
The major cause of roots and grease
wastewater line stoppages
is
, Carbon monoxide (CO) tightness in the chest nausea drowsiness and headache (all of the
poisoning symptoms are above)
The smallest pipe size for 1 inch
air recirculation of a self-
priming centrifugal pump
is
Dangerous gases in a some gases have no odor some gases may deaden the
confined space may not be sense of smell some gases may displace the oxygen
detected with the physical (all of the above)
senses because
What are the dangerous CO2 CO НaS CH4 (all of the above)
gases a collection system
worker might come into
contact with?
On a construction job site, 10
equipment booms must
maintain at least how many
feet of clearance from
overhead electric lines?
How should trench shoring be to above the top of the trench
installed?
When setting work goals for accompanied by an action plan
an employee, the goals
should be
According to Chapter 317, the manhole is completely watertight and tested for no leakage
Design Criteria, a manhole
can be installed within 9
feet of an existing
waterline if
As the population of a decrease
collection system
increases, the ratio of peak
flow to average daily flow
will
Motivating workers to do a letting workers participate in setting goals
better job is best done by
