Page |1
TX Class C Wastewater Treatment License
Questions and Correct Answers/ Latest
Update / Already Graded
Preliminary Treatment
Ans: the 1st stage of sewage treatment where large debris,
such as sticks, grit, and rags pas through a screen followed by a
grit chamber, where the flow of water is slowed enough to
allow for sedimentation.
What stage of treatment is grit removal usually accomplished in?
Ans: preliminary treatment
Rotating Biological Contactor
Ans: a type of biological secondary treatment process
How are protozoa (cause of amoebic dysentery) destroyed?
Ans: disinfection
Other than stream discharge, what are other ways to dispose of
effluent wastewater?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: aquifer recharge, evaporation in a pond, and application
to farm land by irrigation
Clean Water Act
Ans: gives the basic structure for regulating discharges of
pollutants into the waters of the United States
Texas Water Code
Ans: gives the TCEQ jurisdiction over discharges of waste into
or adjacent to water in the state
Who reviews plans and specifications for new construction projects
before construction begins?
Ans: TCEQ
Water quality fees may be as high as ____________ per permit?
Ans: $115,000
Administrative penalties, up to __________ per day for each violation,
may be assessed against any violator.
Ans: $25,000
All rights reserved © 2025/ 2026 |
, Page |3
Every city with more than ________ in population needs to establish a
water pollution control program and hire qualified personnel to
administer it.
Ans: 10,000
State law requires that reports are to be submitted no later than the
________th day of the following month.
Ans: 20
What are major surface waters classified as for the purposes of water
quality management and designation of site-specific standards?
Ans: segments
Inflow
Ans: direct discharges of storm water or surface water into a
wastewater collection system (storm drains, roof gutters, yard
drains, basement sump pumps and broken manholes and
wastewater lines).
How many gallons per day will each person contribute to the
wastewater treatment plant?
All rights reserved © 2025/ 2026 |
, Page |4
Ans: 100
How much BOD will each person contribute to the wastewater
treatment plant each day?
Ans: 0.17
Cause of septic wastewater
Ans: bacterial action
Classifications of solids in wastewater
Ans: fixed/ash, suspended/dissolved, organic/inorganic
Organic compounds in wastewater include
Ans: carbon, hydrogen and oxygen (animal and vegetable in
nature)
Type of organic matter present in wastewater
Ans: proteins
BOD is a measure of what?
All rights reserved © 2025/ 2026 |
TX Class C Wastewater Treatment License
Questions and Correct Answers/ Latest
Update / Already Graded
Preliminary Treatment
Ans: the 1st stage of sewage treatment where large debris,
such as sticks, grit, and rags pas through a screen followed by a
grit chamber, where the flow of water is slowed enough to
allow for sedimentation.
What stage of treatment is grit removal usually accomplished in?
Ans: preliminary treatment
Rotating Biological Contactor
Ans: a type of biological secondary treatment process
How are protozoa (cause of amoebic dysentery) destroyed?
Ans: disinfection
Other than stream discharge, what are other ways to dispose of
effluent wastewater?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: aquifer recharge, evaporation in a pond, and application
to farm land by irrigation
Clean Water Act
Ans: gives the basic structure for regulating discharges of
pollutants into the waters of the United States
Texas Water Code
Ans: gives the TCEQ jurisdiction over discharges of waste into
or adjacent to water in the state
Who reviews plans and specifications for new construction projects
before construction begins?
Ans: TCEQ
Water quality fees may be as high as ____________ per permit?
Ans: $115,000
Administrative penalties, up to __________ per day for each violation,
may be assessed against any violator.
Ans: $25,000
All rights reserved © 2025/ 2026 |
, Page |3
Every city with more than ________ in population needs to establish a
water pollution control program and hire qualified personnel to
administer it.
Ans: 10,000
State law requires that reports are to be submitted no later than the
________th day of the following month.
Ans: 20
What are major surface waters classified as for the purposes of water
quality management and designation of site-specific standards?
Ans: segments
Inflow
Ans: direct discharges of storm water or surface water into a
wastewater collection system (storm drains, roof gutters, yard
drains, basement sump pumps and broken manholes and
wastewater lines).
How many gallons per day will each person contribute to the
wastewater treatment plant?
All rights reserved © 2025/ 2026 |
, Page |4
Ans: 100
How much BOD will each person contribute to the wastewater
treatment plant each day?
Ans: 0.17
Cause of septic wastewater
Ans: bacterial action
Classifications of solids in wastewater
Ans: fixed/ash, suspended/dissolved, organic/inorganic
Organic compounds in wastewater include
Ans: carbon, hydrogen and oxygen (animal and vegetable in
nature)
Type of organic matter present in wastewater
Ans: proteins
BOD is a measure of what?
All rights reserved © 2025/ 2026 |
