1|Page
WASTE WATER GRADE 2 NEWEST 2025 ACTUAL
EXAM COMPLETE 80 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW!!
After the final clarifier, wastewater is sent to the contact tanks
for:
1. Removal of urea
2. Removal of Ammonia
3. Removal of suspended solids
4. Disinfection with chlorine/bleach - CORRECT ANSWER-
Disinfection with chlorine/bleach
A goal of coagulation, flocculation, and sedimentation is to
1. Inactivate pathogens
2. Remove bad tastes, odors, and colors
3. Remove flocculated impurities - CORRECT ANSWER-
Remove bad tastes, odors, and colors
,2|Page
reduce turbidity
A goal of filtration is to:
1. Remove flocculated impurities
2. Remove bad tastes, odors and colors
3. Inactivate pathogens - CORRECT ANSWER-Remove
flocculated impurities
The goal of disinfection is to:
1. Remove bad tastes, odors, and colors
2. Remove flocculated impurities
3. Inactivate pathogens - CORRECT ANSWER-Inactivate
pathogens
UV and ozone are considered secondary disinfectants because:
1. They produce a residual disinfectant
2. They are carried through the distribution piping and disinfect
along the way
3. They are used in corrosion control
4. They do not produce a residual disinfectant - CORRECT
ANSWER-They do not produce a residual disinfectant
, 3|Page
Ammonia reacts with chlorine to form:
1. Corrosion inhibitors
2. Manganese
3. Chloramines
4. Flocs - CORRECT ANSWER-Chloramines
Chloramines are useful in drinking water treatment because
they:
1. Maintain a disinfectant residual through the distribution
system
2. Control corrosion of distribution piping
3. React with impurities to form flocs
4. Are easily filtered out during the filtration process -
CORRECT ANSWER-Maintain a disinfectant residual through
the distribution system
The primary chemical contaminant in groundwater in the Eau
Claire well field is:
1. Nickel
2. VOCs
WASTE WATER GRADE 2 NEWEST 2025 ACTUAL
EXAM COMPLETE 80 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW!!
After the final clarifier, wastewater is sent to the contact tanks
for:
1. Removal of urea
2. Removal of Ammonia
3. Removal of suspended solids
4. Disinfection with chlorine/bleach - CORRECT ANSWER-
Disinfection with chlorine/bleach
A goal of coagulation, flocculation, and sedimentation is to
1. Inactivate pathogens
2. Remove bad tastes, odors, and colors
3. Remove flocculated impurities - CORRECT ANSWER-
Remove bad tastes, odors, and colors
,2|Page
reduce turbidity
A goal of filtration is to:
1. Remove flocculated impurities
2. Remove bad tastes, odors and colors
3. Inactivate pathogens - CORRECT ANSWER-Remove
flocculated impurities
The goal of disinfection is to:
1. Remove bad tastes, odors, and colors
2. Remove flocculated impurities
3. Inactivate pathogens - CORRECT ANSWER-Inactivate
pathogens
UV and ozone are considered secondary disinfectants because:
1. They produce a residual disinfectant
2. They are carried through the distribution piping and disinfect
along the way
3. They are used in corrosion control
4. They do not produce a residual disinfectant - CORRECT
ANSWER-They do not produce a residual disinfectant
, 3|Page
Ammonia reacts with chlorine to form:
1. Corrosion inhibitors
2. Manganese
3. Chloramines
4. Flocs - CORRECT ANSWER-Chloramines
Chloramines are useful in drinking water treatment because
they:
1. Maintain a disinfectant residual through the distribution
system
2. Control corrosion of distribution piping
3. React with impurities to form flocs
4. Are easily filtered out during the filtration process -
CORRECT ANSWER-Maintain a disinfectant residual through
the distribution system
The primary chemical contaminant in groundwater in the Eau
Claire well field is:
1. Nickel
2. VOCs
