WASTEWATER OPERATOR CERTIFICATION
TEST BANK 2026 FULL QUESTIONS AND
CORRECT ANSWERS GRADED A+
◉ Certification Exam. Answer: Assessment required for wastewater
treatment certification
◉ Sewage. Answer: Wastewater requiring purification
◉ Preliminary Treatment. Answer: First stage in wastewater treatment
process
◉ Activated Sludge. Answer: Biological treatment process for
wastewater
◉ Odor Control. Answer: Process to manage unpleasant smells in
wastewater treatment
◉ Phosphorus Removal. Answer: Elimination of phosphorus from
wastewater
, ◉ Disinfection. Answer: Process to kill harmful microorganisms in
wastewater
◉ Maintenance. Answer: Regular upkeep of wastewater treatment
facilities
◉ Safety. Answer: Ensuring a secure environment in wastewater
treatment
◉ Basic Chemistry. Answer: Fundamental chemical principles in
wastewater treatment
◉ Trickling Filters. Answer: Treatment method using biological
filtration
◉ Rotating Biological Contactors. Answer: System using rotating discs
for biological treatment
◉ Effluent Disposal. Answer: Safe disposal of treated wastewater into
the environment
◉ Residual Solids Management. Answer: Handling and disposal of solid
waste from wastewater treatment
TEST BANK 2026 FULL QUESTIONS AND
CORRECT ANSWERS GRADED A+
◉ Certification Exam. Answer: Assessment required for wastewater
treatment certification
◉ Sewage. Answer: Wastewater requiring purification
◉ Preliminary Treatment. Answer: First stage in wastewater treatment
process
◉ Activated Sludge. Answer: Biological treatment process for
wastewater
◉ Odor Control. Answer: Process to manage unpleasant smells in
wastewater treatment
◉ Phosphorus Removal. Answer: Elimination of phosphorus from
wastewater
, ◉ Disinfection. Answer: Process to kill harmful microorganisms in
wastewater
◉ Maintenance. Answer: Regular upkeep of wastewater treatment
facilities
◉ Safety. Answer: Ensuring a secure environment in wastewater
treatment
◉ Basic Chemistry. Answer: Fundamental chemical principles in
wastewater treatment
◉ Trickling Filters. Answer: Treatment method using biological
filtration
◉ Rotating Biological Contactors. Answer: System using rotating discs
for biological treatment
◉ Effluent Disposal. Answer: Safe disposal of treated wastewater into
the environment
◉ Residual Solids Management. Answer: Handling and disposal of solid
waste from wastewater treatment
