WASTEWATER CLASS B TEXAS ACTUAL
ASSESSMENT 2026 VERIFIED QUESTIONS
AND ACCURATE ANSWERS FULL REVIEW
PACK GRADED A+
⩥ An effective way for the collection system worker to prevent infection
by waterborn pathogenic organism is to.
Answer: Wear protective clothing and avoid direct contact with waste
water
⩥ _________will increase the chances that sewage will turn septic.
Answer: Stoppages in the main line
⩥ Extensive use of garbage disposals (grinders) in a community would
likely have the following effect on the collection system.
Answer: Increase the amount of flow, solids, and grease
⩥ The minimum size for a gravity flow sewer line on city right-of-way
and the minimum grade is.
Answer: 6 inch and a grade of 0.50 percent
⩥ The most accurate way to find the average wastewater flow rate in an
existing 10-inch sewer main is.
,Answer: Obtaining actual flow data & verifying with field data
⩥ What is the greatest advantage for using fiberglass manholes in areas
with high groundwater?.
Answer: fiberglass is not subject to infiltration
⩥ A __________ pump would most likely be used when discharging into
a 10" diameter pressure sewer main..
Answer: Centrifugal
⩥ Excessive power consumption by a pump could be caused by.
Answer: Worn bearings and worn impeller
⩥ Trench safety is a great concern in Texas. OSHA requires that anytime
an excavation is greater than __ feet deep it must be protected by
______..
Answer: 5 feet / An approved Trench Box, Shoring, or Sloping
⩥ In an excavation if a ladder is used as a means of exit, it must extend
________feet above the ground and be secured and within ____ feet
laterally of anyone in the excavation..
Answer: 3 feet / 25 feet laterally
, ⩥ A ____________ would be the best to determine if a storm drain is
connected to a sanitary sewer line..
Answer: Smoke Test
⩥ _________ would most commonly be used to seal a number of joint
leaks on a main with minimal interruption.
Answer: internal grouting
⩥ Pre-treatment of wastewater would include:.
Answer: Coarse or fine screening, grinding and grit removal and grease
removal and pre-aeration
⩥ Primary treatment of wastewater would include.
Answer: settling tanks or basins, scum collection and removal, sludge
collection and removal
⩥ Secondary treatment typically used today would include.
Answer: Stabilization ponds, trickling filters, rotating biological
contractors (RBC) & activated sludge
⩥ Essential components of the wastewater collection system include.
Answer: Sewer mains & piping, Lift Stations, Pumps, Grease & Sand
traps, & Manholes
ASSESSMENT 2026 VERIFIED QUESTIONS
AND ACCURATE ANSWERS FULL REVIEW
PACK GRADED A+
⩥ An effective way for the collection system worker to prevent infection
by waterborn pathogenic organism is to.
Answer: Wear protective clothing and avoid direct contact with waste
water
⩥ _________will increase the chances that sewage will turn septic.
Answer: Stoppages in the main line
⩥ Extensive use of garbage disposals (grinders) in a community would
likely have the following effect on the collection system.
Answer: Increase the amount of flow, solids, and grease
⩥ The minimum size for a gravity flow sewer line on city right-of-way
and the minimum grade is.
Answer: 6 inch and a grade of 0.50 percent
⩥ The most accurate way to find the average wastewater flow rate in an
existing 10-inch sewer main is.
,Answer: Obtaining actual flow data & verifying with field data
⩥ What is the greatest advantage for using fiberglass manholes in areas
with high groundwater?.
Answer: fiberglass is not subject to infiltration
⩥ A __________ pump would most likely be used when discharging into
a 10" diameter pressure sewer main..
Answer: Centrifugal
⩥ Excessive power consumption by a pump could be caused by.
Answer: Worn bearings and worn impeller
⩥ Trench safety is a great concern in Texas. OSHA requires that anytime
an excavation is greater than __ feet deep it must be protected by
______..
Answer: 5 feet / An approved Trench Box, Shoring, or Sloping
⩥ In an excavation if a ladder is used as a means of exit, it must extend
________feet above the ground and be secured and within ____ feet
laterally of anyone in the excavation..
Answer: 3 feet / 25 feet laterally
, ⩥ A ____________ would be the best to determine if a storm drain is
connected to a sanitary sewer line..
Answer: Smoke Test
⩥ _________ would most commonly be used to seal a number of joint
leaks on a main with minimal interruption.
Answer: internal grouting
⩥ Pre-treatment of wastewater would include:.
Answer: Coarse or fine screening, grinding and grit removal and grease
removal and pre-aeration
⩥ Primary treatment of wastewater would include.
Answer: settling tanks or basins, scum collection and removal, sludge
collection and removal
⩥ Secondary treatment typically used today would include.
Answer: Stabilization ponds, trickling filters, rotating biological
contractors (RBC) & activated sludge
⩥ Essential components of the wastewater collection system include.
Answer: Sewer mains & piping, Lift Stations, Pumps, Grease & Sand
traps, & Manholes
