MASTER Plumbing {Code (Interceptors, Separators,
and Fixture Requirements)} 2026-2027
Comprehensive Frequently Tested Exam Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the primary purpose of interceptors, separators, and holding tanks?
A. To increase drainage flow rates
B. To store wastewater indefinitely
C. To prevent harmful substances from entering drainage systems
D. To improve fixture venting
Correct Answer: C
2. Which substances are specifically identified as harmful under the regulations?
A. Acids, detergents, solvents
B. Oil, gasoline, grease, sand, and other hazardous substances
C. Chemicals used for cleaning only
D. Sewage and gray water
Correct Answer: B
3. Which types of buildings are required to install a separation or containment
system?
A. Residential dwellings
B. Office buildings only
,C. Buildings with vehicle parking, repair, washing, or storage areas
D. Schools and hospitals
Correct Answer: C
4. Which of the following is an exception to the requirement for a separation or
containment system?
A. Fixtures with integral traps
B. Roof drains with easily removable covers
C. Either A or B
D. No exceptions are permitted
Correct Answer: C
5. What is prohibited regarding cleanout openings?
A. Installing cleanouts in exterior walls
B. Using cleanouts for new plumbing without equivalent access
C. Labeling cleanout openings
D. Installing cleanouts below grade
Correct Answer: B
6. Where must manholes be located for large underground piping systems?
A. Every 100 feet
B. Only at property lines
C. At every change in diameter, alignment, grade, or elevation and not more than
350 feet apart
D. Only at the building connection
Correct Answer: C
, 7. Small garages are exempt from separation systems if they contain no more
than how many vehicles?
A. Four
B. Five
C. Six
D. Eight
Correct Answer: C
8. Discharge from gravity drains or pumps must comply with which
requirement?
A. Local zoning ordinances
B. Manufacturer instructions
C. 248 CMR 10.00
D. EPA discharge limits
Correct Answer: C
9. Elevators using hydraulic oil must discharge through:
A. A grease interceptor
B. A sump pump
C. A properly sized oil/water separator
D. A sand interceptor
Correct Answer: C
10. Before connecting a separation system to a sewer system, what is required?
A. Local building department approval only
B. Compliance with design specifications or Board approval
and Fixture Requirements)} 2026-2027
Comprehensive Frequently Tested Exam Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the primary purpose of interceptors, separators, and holding tanks?
A. To increase drainage flow rates
B. To store wastewater indefinitely
C. To prevent harmful substances from entering drainage systems
D. To improve fixture venting
Correct Answer: C
2. Which substances are specifically identified as harmful under the regulations?
A. Acids, detergents, solvents
B. Oil, gasoline, grease, sand, and other hazardous substances
C. Chemicals used for cleaning only
D. Sewage and gray water
Correct Answer: B
3. Which types of buildings are required to install a separation or containment
system?
A. Residential dwellings
B. Office buildings only
,C. Buildings with vehicle parking, repair, washing, or storage areas
D. Schools and hospitals
Correct Answer: C
4. Which of the following is an exception to the requirement for a separation or
containment system?
A. Fixtures with integral traps
B. Roof drains with easily removable covers
C. Either A or B
D. No exceptions are permitted
Correct Answer: C
5. What is prohibited regarding cleanout openings?
A. Installing cleanouts in exterior walls
B. Using cleanouts for new plumbing without equivalent access
C. Labeling cleanout openings
D. Installing cleanouts below grade
Correct Answer: B
6. Where must manholes be located for large underground piping systems?
A. Every 100 feet
B. Only at property lines
C. At every change in diameter, alignment, grade, or elevation and not more than
350 feet apart
D. Only at the building connection
Correct Answer: C
, 7. Small garages are exempt from separation systems if they contain no more
than how many vehicles?
A. Four
B. Five
C. Six
D. Eight
Correct Answer: C
8. Discharge from gravity drains or pumps must comply with which
requirement?
A. Local zoning ordinances
B. Manufacturer instructions
C. 248 CMR 10.00
D. EPA discharge limits
Correct Answer: C
9. Elevators using hydraulic oil must discharge through:
A. A grease interceptor
B. A sump pump
C. A properly sized oil/water separator
D. A sand interceptor
Correct Answer: C
10. Before connecting a separation system to a sewer system, what is required?
A. Local building department approval only
B. Compliance with design specifications or Board approval
