Massachusetts Plumbing {Regulations: 248 CMR}
Overview for Inspectors and Plumbers} 2026-2027
Frequently Tested Exam Questions With Verified
Multiple Choice and Conceptual Actual 100%
Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. According to 248 CMR, what must all installed plumbing conform to?
A. Manufacturer specifications only
B. Local municipal guidelines
C. The general requirements of 248 CMR 10.00
D. Inspector discretion
2. What occurs when a plumbing installation is found compliant during
inspection?
A. The permit is voided
B. A correction notice is issued
C. An inspection approval tag is issued
D. A reinspection is required
3. What must be done if defects are found during a plumbing inspection?
A. Remove the installation
B. Ignore until final inspection
C. Remedy the violations and notify the Inspector for reinspection
D. File a variance request
,4. What happens if a licensee fails to notify the Inspector of plumbing defects?
A. A warning is issued
B. License suspension
C. No further permits are granted until defects are corrected
D. Automatic fines are imposed
5. When may deviations from 248 CMR be permitted?
A. In all new construction
B. At the licensee’s discretion
C. In existing buildings during alterations, with Inspector approval
D. Never
6. What is required when a plumbing fixture is permanently removed?
A. No action is necessary
B. Inspector approval only
C. A permit must be obtained and connections made water- and gas-tight
D. Fixture must remain capped
7. How must horizontal drainage piping be installed?
A. With flexible alignment
B. At varying pitch
C. In straight alignment with uniform pitch
D. With offsets every 10 feet
8. What is the minimum pitch for horizontal drainage piping 3 inches or smaller?
A. ⅛ inch per foot
B. ¼ inch per foot
,C. ½ inch per foot
D. No pitch required
9. Which fittings are prohibited in drainage systems?
A. Wyes
B. Long sweep bends
C. Straight tee branches and fittings that obstruct flow
D. Combination fittings
10. What is required if a plumbing system is suspected to be defective?
A. Immediate removal
B. Permit revocation
C. Testing and/or inspection with owner notification
D. No action unless failure occurs
11. How must changes in drainage pipe direction be made?
A. With short turns
B. With tees
C. Using wyes or long sweep fittings
D. With compression fittings
12. What is the minimum pitch for drainage piping larger than 3 inches?
A. ¼ inch per foot
B. ⅛ inch per foot
C. 1 inch per foot
D. Flat
, 13. If plumbing compliance does not correct a health or safety hazard, what
must the Inspector do?
A. Close the permit
B. Ignore the violation
C. Notify the owner in writing of violations and corrective procedures
D. Issue a fine only
14. What is required for trenching and bedding of storm and sanitary piping?
A. Narrow trenches
B. Hand-dug trenches only
C. Trenches wide enough for proper pipe installation
D. Concrete bedding only
15. What is significant about 248 CMR 10.04 and 10.06?
A. They are optional
B. They apply only to residential work
C. They cannot be waived for material or fixture provisions
D. They apply only to inspectors
16. What is the Inspector’s role regarding plumbing violations?
A. Perform repairs
B. Issue permits
C. Notify the owner of violations and compliance procedures
D. Approve deviations automatically
17. What must be done to ensure safe working conditions in trenches?
Overview for Inspectors and Plumbers} 2026-2027
Frequently Tested Exam Questions With Verified
Multiple Choice and Conceptual Actual 100%
Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. According to 248 CMR, what must all installed plumbing conform to?
A. Manufacturer specifications only
B. Local municipal guidelines
C. The general requirements of 248 CMR 10.00
D. Inspector discretion
2. What occurs when a plumbing installation is found compliant during
inspection?
A. The permit is voided
B. A correction notice is issued
C. An inspection approval tag is issued
D. A reinspection is required
3. What must be done if defects are found during a plumbing inspection?
A. Remove the installation
B. Ignore until final inspection
C. Remedy the violations and notify the Inspector for reinspection
D. File a variance request
,4. What happens if a licensee fails to notify the Inspector of plumbing defects?
A. A warning is issued
B. License suspension
C. No further permits are granted until defects are corrected
D. Automatic fines are imposed
5. When may deviations from 248 CMR be permitted?
A. In all new construction
B. At the licensee’s discretion
C. In existing buildings during alterations, with Inspector approval
D. Never
6. What is required when a plumbing fixture is permanently removed?
A. No action is necessary
B. Inspector approval only
C. A permit must be obtained and connections made water- and gas-tight
D. Fixture must remain capped
7. How must horizontal drainage piping be installed?
A. With flexible alignment
B. At varying pitch
C. In straight alignment with uniform pitch
D. With offsets every 10 feet
8. What is the minimum pitch for horizontal drainage piping 3 inches or smaller?
A. ⅛ inch per foot
B. ¼ inch per foot
,C. ½ inch per foot
D. No pitch required
9. Which fittings are prohibited in drainage systems?
A. Wyes
B. Long sweep bends
C. Straight tee branches and fittings that obstruct flow
D. Combination fittings
10. What is required if a plumbing system is suspected to be defective?
A. Immediate removal
B. Permit revocation
C. Testing and/or inspection with owner notification
D. No action unless failure occurs
11. How must changes in drainage pipe direction be made?
A. With short turns
B. With tees
C. Using wyes or long sweep fittings
D. With compression fittings
12. What is the minimum pitch for drainage piping larger than 3 inches?
A. ¼ inch per foot
B. ⅛ inch per foot
C. 1 inch per foot
D. Flat
, 13. If plumbing compliance does not correct a health or safety hazard, what
must the Inspector do?
A. Close the permit
B. Ignore the violation
C. Notify the owner in writing of violations and corrective procedures
D. Issue a fine only
14. What is required for trenching and bedding of storm and sanitary piping?
A. Narrow trenches
B. Hand-dug trenches only
C. Trenches wide enough for proper pipe installation
D. Concrete bedding only
15. What is significant about 248 CMR 10.04 and 10.06?
A. They are optional
B. They apply only to residential work
C. They cannot be waived for material or fixture provisions
D. They apply only to inspectors
16. What is the Inspector’s role regarding plumbing violations?
A. Perform repairs
B. Issue permits
C. Notify the owner of violations and compliance procedures
D. Approve deviations automatically
17. What must be done to ensure safe working conditions in trenches?
