Wastewater Practice Exam (2026/2027) Questions
and Verified Answers, 100% Guarantee Pass
Odors occur when treatment becomes - CORRECT ANSWER -Anaerobic
What should an operator do before entering a manhole - CORRECT ANSWER -Test for all
hazardous gases and oxygen levels and ventilate the manhole before entering
What treatment devices is commonly used to separate and remove large solids from raw
wastewater - CORRECT ANSWER -a mechanically raked bar screen
What diseases are caused by pathogenic organisms that may be present in raw wastewater? -
CORRECT ANSWER -Hepatitis, typhoid, paratyphoid, dysentery, and cholera
What is typically used to dewater sludge? - CORRECT ANSWER -Belt press, Drying beds, solid
bowl centrifuge, and gravity thickener
Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet wide
and 20 feet deep - CORRECT ANSWER -269,280
What is typically used whenever wastewater cannot flow to the treatment plant by gravity -
CORRECT ANSWER -Lift station
A centrifugal pump must be ? or it will not pump - CORRECT ANSWER -Primed
One common type of weir design for measuring flow is - CORRECT ANSWER -V-Knotch
The operator would need to increase or decrease if the ? loading on the plant is high - CORRECT
ANSWER -increase/Organic
and Verified Answers, 100% Guarantee Pass
Odors occur when treatment becomes - CORRECT ANSWER -Anaerobic
What should an operator do before entering a manhole - CORRECT ANSWER -Test for all
hazardous gases and oxygen levels and ventilate the manhole before entering
What treatment devices is commonly used to separate and remove large solids from raw
wastewater - CORRECT ANSWER -a mechanically raked bar screen
What diseases are caused by pathogenic organisms that may be present in raw wastewater? -
CORRECT ANSWER -Hepatitis, typhoid, paratyphoid, dysentery, and cholera
What is typically used to dewater sludge? - CORRECT ANSWER -Belt press, Drying beds, solid
bowl centrifuge, and gravity thickener
Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet wide
and 20 feet deep - CORRECT ANSWER -269,280
What is typically used whenever wastewater cannot flow to the treatment plant by gravity -
CORRECT ANSWER -Lift station
A centrifugal pump must be ? or it will not pump - CORRECT ANSWER -Primed
One common type of weir design for measuring flow is - CORRECT ANSWER -V-Knotch
The operator would need to increase or decrease if the ? loading on the plant is high - CORRECT
ANSWER -increase/Organic
