WASTEWATER COLLECTIONS EXAM
QUESTIONS AND ANSWERS 2026
What is a unusually strong wastewater discharged from a waste source? - ANSWERSA
sock load
The four categories of wastewater characteristics are? - ANSWERSphysical, chemical,
bacteriological,
and radiological.
The amount of wastewater collected depends on? - ANSWERSeconomic status, water
rates, climate,
infiltration/inflow, and industry.
Physical characteristics are detected by the senses such as? - ANSWERSsmell and
sight
When anaerobic decomposition begins producing acid and
odorous gases.? - ANSWERSBegins when dissolved oxygen is gone
One mg/L or one ppm is? - ANSWERSone pound of material in a million pounds of
water.
Organics are produced by - ANSWERSplants, animals, or humans
It is not organic and examples are sand, metal, and rock. - ANSWERS"Inorganic"
What is toxic, corrosive, flammable, heavier than air, deadens the sense of
smell, and has a rotten egg odor. - ANSWERSHydrogen sulfide
What is lighter than air, explosive, colorless, and odorless? - ANSWERSMethane
(natural) gas
What Oil and grease in wastewater may cause? - ANSWERSexplosion, fires,stoppages
and odor
Excessive chlorides interfere with treatment and effect wastewater ____ -
ANSWERSlab tests
The BOD test indicates the amount of organic matter that can be oxidized by biological
and
chemical action in how many days at what temperature ? - ANSWERS5 days at 20°C
, Bacteria requiring free, uncombined oxygen are ________. - ANSWERSaerobic
Bacteria requiring combined oxygen are ________. - ANSWERSanaerobic
Bacteria able to metabolize free or combined oxygen are ________. -
ANSWERSfacultative
Disease-causing microorganisms are called ________. - ANSWERSpathogens
Waterborne diseases include typhoid, dysentery, cholera, and ________. -
ANSWERSpolio
Types of industrial waste are flammable oil, toxic gases, and ________. -
ANSWERSacids and alkalis
is the state law for water pollution control in Texas? - ANSWERSThe Texas Water Code
is the primary state agency having authority for water pollution control in Texas? -
ANSWERSThe TCEQ
can review wastewater system projects in lieu of TCEQ by submitting
notification of intent to review. - ANSWERSMunicipalities
No one can construct a treatment plant without a permit except with the approval? -
ANSWERSTCEQ
The TCEQ sets permit conditions including permit duration, quality of discharge,
discharge
point, reporting requirements, and ________. - ANSWERSmaximum discharge
TCEQ shares authority with agencies including the________ department. -
ANSWERSParks and Wildlife
Local governments must inspect water quality to determine - ANSWERSThat standards
are met, dischargers permitted,
permits are followed
Under certain conditions, a city with a population of ________ or more may be required
to
establish a water pollution control and abatement program. - ANSWERS10,000
What is the surface area of the bottom of a rectangular storage tank 10 feet long and
five feet
wide? - ANSWERSL× W = Area ft2
10 × 5 = 50 ft2
QUESTIONS AND ANSWERS 2026
What is a unusually strong wastewater discharged from a waste source? - ANSWERSA
sock load
The four categories of wastewater characteristics are? - ANSWERSphysical, chemical,
bacteriological,
and radiological.
The amount of wastewater collected depends on? - ANSWERSeconomic status, water
rates, climate,
infiltration/inflow, and industry.
Physical characteristics are detected by the senses such as? - ANSWERSsmell and
sight
When anaerobic decomposition begins producing acid and
odorous gases.? - ANSWERSBegins when dissolved oxygen is gone
One mg/L or one ppm is? - ANSWERSone pound of material in a million pounds of
water.
Organics are produced by - ANSWERSplants, animals, or humans
It is not organic and examples are sand, metal, and rock. - ANSWERS"Inorganic"
What is toxic, corrosive, flammable, heavier than air, deadens the sense of
smell, and has a rotten egg odor. - ANSWERSHydrogen sulfide
What is lighter than air, explosive, colorless, and odorless? - ANSWERSMethane
(natural) gas
What Oil and grease in wastewater may cause? - ANSWERSexplosion, fires,stoppages
and odor
Excessive chlorides interfere with treatment and effect wastewater ____ -
ANSWERSlab tests
The BOD test indicates the amount of organic matter that can be oxidized by biological
and
chemical action in how many days at what temperature ? - ANSWERS5 days at 20°C
, Bacteria requiring free, uncombined oxygen are ________. - ANSWERSaerobic
Bacteria requiring combined oxygen are ________. - ANSWERSanaerobic
Bacteria able to metabolize free or combined oxygen are ________. -
ANSWERSfacultative
Disease-causing microorganisms are called ________. - ANSWERSpathogens
Waterborne diseases include typhoid, dysentery, cholera, and ________. -
ANSWERSpolio
Types of industrial waste are flammable oil, toxic gases, and ________. -
ANSWERSacids and alkalis
is the state law for water pollution control in Texas? - ANSWERSThe Texas Water Code
is the primary state agency having authority for water pollution control in Texas? -
ANSWERSThe TCEQ
can review wastewater system projects in lieu of TCEQ by submitting
notification of intent to review. - ANSWERSMunicipalities
No one can construct a treatment plant without a permit except with the approval? -
ANSWERSTCEQ
The TCEQ sets permit conditions including permit duration, quality of discharge,
discharge
point, reporting requirements, and ________. - ANSWERSmaximum discharge
TCEQ shares authority with agencies including the________ department. -
ANSWERSParks and Wildlife
Local governments must inspect water quality to determine - ANSWERSThat standards
are met, dischargers permitted,
permits are followed
Under certain conditions, a city with a population of ________ or more may be required
to
establish a water pollution control and abatement program. - ANSWERS10,000
What is the surface area of the bottom of a rectangular storage tank 10 feet long and
five feet
wide? - ANSWERSL× W = Area ft2
10 × 5 = 50 ft2
