WASTEWATER CLASS B TEXAS FINAL PAPER
2026 STUDY GUIDE DETAILED ANSWERS
READY
◉ The wastewater plant operator is primarily responsible for.
Answer: treating wastewater discharged into the community
◉ Chapter ___ of the Texas Water Code is the state law controlling
water pollution and gives ___ authority to control discharges in
Texas.
Answer: Chapter 26 and Texas Commission of Environmental
Quality
◉ The Texas Commission on Environmental Quality can revoke an
operator's license if the operator.
Answer: causes permit violation, falsifies records or neglects their
duty
◉ If accidental discharge, bypass, or spill (SSO) of wastewater
occurs the responsible party MUST notify TCEQ regional offices
within ____ hours.
Answer: 24
,◉ Aerobic Bacteria require_____ in the water for their metabolism.
Answer: oxygen
◉ Anaerobic Bacteria _____ live with O2 present in the water for their
metabolism.
Answer: cannot
◉ Facultative Bacteria require__________in the water for their
metabolism.
Answer: either aerobic or anaerobic conditions
◉ Chemical characteristics of sewage include.
Answer: solids, greases, dissolved oxygen, O2 Demand, pH, and
gasses
◉ _________removes Total Suspended Solids (TSS).
Answer: filtration
◉ Inorganic solids include.
Answer: sand, grit and minerals
◉ Organic solids include.
,Answer: organic materials from plants, animals or humans
◉ A good plant influent pH is about.
Answer: 7.2
◉ Dangerous gases are produced during bacterial decomposition of
organics in wastewater. The main gasses are.
Answer: Hydrogen sulfide, carbon dioxide and methane
◉ The majority of Dissolved Oxygen in raw sewage comes from.
Answer: Potable Drinking Water
◉ Each person contributes approximately ______ lbs of BOD to the
system daily..
Answer: 0.17
◉ Sources of waste water include.
Answer: domestic, storm water, commercial, food processing,
agricultural and industrial
◉ A sewer manhole provides access into the system for cleaning or
service. A manhole is located.
, Answer: at changes in alignment, diameter, grade, direction and
intersection
◉ New manholes must have an inside diameter of at least ______ feet
and the entry access must be at least ____inches..
Answer: 4 feet and 24 inches
◉ In the past ____ was used to construct manholes. This product is
prohibited for construction or grading today.
Answer: brick and mortar
◉ Vitrified clay and Poly Vinyl Chloride (PVC) are the most common
pipe materials used for sewer lines but other materials are available
such as.
Answer: ductile iron, cast iron, acrylontrile butadiene styrene (ABS)
Concrete, polyethylene & asbestos concrete
◉ Whenever wastewater cannot flow to the treatment plant by _____
a _____ is typically used.
Answer: gravity/ lift station
◉ The primary cause of stoppage in a collection system is _____ and
_____.
Answer: grease/roots
2026 STUDY GUIDE DETAILED ANSWERS
READY
◉ The wastewater plant operator is primarily responsible for.
Answer: treating wastewater discharged into the community
◉ Chapter ___ of the Texas Water Code is the state law controlling
water pollution and gives ___ authority to control discharges in
Texas.
Answer: Chapter 26 and Texas Commission of Environmental
Quality
◉ The Texas Commission on Environmental Quality can revoke an
operator's license if the operator.
Answer: causes permit violation, falsifies records or neglects their
duty
◉ If accidental discharge, bypass, or spill (SSO) of wastewater
occurs the responsible party MUST notify TCEQ regional offices
within ____ hours.
Answer: 24
,◉ Aerobic Bacteria require_____ in the water for their metabolism.
Answer: oxygen
◉ Anaerobic Bacteria _____ live with O2 present in the water for their
metabolism.
Answer: cannot
◉ Facultative Bacteria require__________in the water for their
metabolism.
Answer: either aerobic or anaerobic conditions
◉ Chemical characteristics of sewage include.
Answer: solids, greases, dissolved oxygen, O2 Demand, pH, and
gasses
◉ _________removes Total Suspended Solids (TSS).
Answer: filtration
◉ Inorganic solids include.
Answer: sand, grit and minerals
◉ Organic solids include.
,Answer: organic materials from plants, animals or humans
◉ A good plant influent pH is about.
Answer: 7.2
◉ Dangerous gases are produced during bacterial decomposition of
organics in wastewater. The main gasses are.
Answer: Hydrogen sulfide, carbon dioxide and methane
◉ The majority of Dissolved Oxygen in raw sewage comes from.
Answer: Potable Drinking Water
◉ Each person contributes approximately ______ lbs of BOD to the
system daily..
Answer: 0.17
◉ Sources of waste water include.
Answer: domestic, storm water, commercial, food processing,
agricultural and industrial
◉ A sewer manhole provides access into the system for cleaning or
service. A manhole is located.
, Answer: at changes in alignment, diameter, grade, direction and
intersection
◉ New manholes must have an inside diameter of at least ______ feet
and the entry access must be at least ____inches..
Answer: 4 feet and 24 inches
◉ In the past ____ was used to construct manholes. This product is
prohibited for construction or grading today.
Answer: brick and mortar
◉ Vitrified clay and Poly Vinyl Chloride (PVC) are the most common
pipe materials used for sewer lines but other materials are available
such as.
Answer: ductile iron, cast iron, acrylontrile butadiene styrene (ABS)
Concrete, polyethylene & asbestos concrete
◉ Whenever wastewater cannot flow to the treatment plant by _____
a _____ is typically used.
Answer: gravity/ lift station
◉ The primary cause of stoppage in a collection system is _____ and
_____.
Answer: grease/roots
