License Exam Questions And Answers
(Latest Update)
Preliminary Treatment - - -
correct answer ✅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? - -
-
correct answer ✅preliminary treatment
Rotating Biological Contactor - - -
correct answer ✅a type of biological secondary treatment process
How are protozoa (cause of amoebic dysentery) destroyed? - - -
correct answer ✅disinfection
Other than stream discharge, what are other ways to dispose of
effluent wastewater? - - -
correct answer ✅aquifer recharge, evaporation in a pond, and
application to farm land by irrigation
,TX Class C Wastewater Treatment
License Exam Questions And Answers
(Latest Update)
Clean Water Act - - -
correct answer ✅gives the basic structure for regulating discharges
of pollutants into the waters of the United States
Texas Water Code - - -
correct answer ✅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? - - -
correct answer ✅TCEQ
Water quality fees may be as high as ____________ per permit? - -
-
correct answer ✅$115,000
Administrative penalties, up to __________ per day for each
violation, may be assessed against any violator. - - -
correct answer ✅$25,000
Every city with more than ________ in population needs to
establish a water pollution control program and hire qualified
,TX Class C Wastewater Treatment
License Exam Questions And Answers
(Latest Update)
personnel to administer it. - - -
correct answer ✅10,000
State law requires that reports are to be submitted no later than
the ________th day of the following month. - - -
correct answer ✅20
What are major surface waters classified as for the purposes of
water quality management and designation of site-specific
standards? - - -
correct answer ✅segments
Inflow - - -
correct answer ✅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? - - -
correct answer ✅100
, TX Class C Wastewater Treatment
License Exam Questions And Answers
(Latest Update)
How much BOD will each person contribute to the wastewater
treatment plant each day? - - -
correct answer ✅0.17
Cause of septic wastewater - - -
correct answer ✅bacterial action
Classifications of solids in wastewater - - -
correct answer ✅fixed/ash, suspended/dissolved,
organic/inorganic
Organic compounds in wastewater include - - -
correct answer ✅carbon, hydrogen and oxygen (animal and
vegetable in nature)
Type of organic matter present in wastewater - - -
correct answer ✅proteins
BOD is a measure of what? - - -
correct answer ✅oxygen used up