Massachusetts Journeyman Plumbing
(Residential Plumbing) 2026-2027
Comprehensive Frequently Tested Exam
Questions With Verified Multiple Choice
and Conceptual Actual 100% Correct
Detailed Answers
Guaranteed Pass!!Current Update!!
1. ________________ must be set to discharge at a temperature not higher
than 210? F (99? C).
a) Liquid nitrogen tanks
b) Sewer ejector or grinder pressure pumps
c) Fuel-gas valves
d) Backflow pressure valves
e) Temperature pressure-relief (TPR) valves
f) Temperature-isolation valves - ANSWER Temperature pressure-relief
(TPR) valves
2. The TPR discharge pipe should discharge through a(n) ________ located in
the same room as the water heater.
a) sump pump system
b) Schrader valve
c) water aperture device
d) air gap
e) hole in the floor
f) sewer drainpipe - ANSWER air gap
,3. A water leak catch pan is not considered __________.
a) unlike a wastewater collection fixture
b) designed for hot temperatures
c) shallow enough
d) circular
e) an indirect waste receptor
f) intended to catch leaking water from a fixture - ANSWER an indirect
waste receptor
4. T/F: A shut-off valve is the same as a full-open valve.
a) False. There's a pressure drop through a shut-off valve, but not through a
full-open valve.
b) True. But full-open valves are for fuel gas only.
c) False. A shut-off valve is for sewage, and a full-open valve is for wastewater.
d) True. Just the names are different. - ANSWER False. There's a pressure
drop through a shut-off valve, but not through a full-open valve.
5. The U.S. ______________ Office of Drinking Water controls the quality
requirements for water to be classified as potable.
a) Department of Agriculture's (USDA)
b) Environmental Protection Agency's (EPA)
c) Energy and Green Material's (EGM)
d) Department of Sustainability's (USDS)
e) Department of Environmental Procurement's (DEP) - ANSWER
Environmental Protection Agency's (EPA)
6. A well casing should extend above the ground surface ______ inches.
a) Trick question. The casing should never be above the ground surface.
, b) 6 to 12
c) 1 to 3
d) 36 to 48 - ANSWER 6 to 12
7. There are _____ wells (more than 25 feet deep) and _____ wells (25 feet or
less).
a) drilled..... irrigated
b) shallow....... deep
c) shallow... bored
d) deep..... wide
e) deep..... shallow - ANSWER deep..... shallow
8. Installation of supply lines and fittings for all fixtures should be prevent
_______.
a) defective pressure reduction
b) friction
c) inadequate clearance to combustibles
d) indirect venting
e) backflow - ANSWER backflow
9. A(n) ________ is the most effective and dependable method of preventing
backflow.
a) over-fusing
b) air gap
c) mechanical device with moving parts
d) inoperative conjunction - ANSWER air gap
10. The minimum diameter of a water service pipe is typically ________.
a) 1/2-inch
(Residential Plumbing) 2026-2027
Comprehensive Frequently Tested Exam
Questions With Verified Multiple Choice
and Conceptual Actual 100% Correct
Detailed Answers
Guaranteed Pass!!Current Update!!
1. ________________ must be set to discharge at a temperature not higher
than 210? F (99? C).
a) Liquid nitrogen tanks
b) Sewer ejector or grinder pressure pumps
c) Fuel-gas valves
d) Backflow pressure valves
e) Temperature pressure-relief (TPR) valves
f) Temperature-isolation valves - ANSWER Temperature pressure-relief
(TPR) valves
2. The TPR discharge pipe should discharge through a(n) ________ located in
the same room as the water heater.
a) sump pump system
b) Schrader valve
c) water aperture device
d) air gap
e) hole in the floor
f) sewer drainpipe - ANSWER air gap
,3. A water leak catch pan is not considered __________.
a) unlike a wastewater collection fixture
b) designed for hot temperatures
c) shallow enough
d) circular
e) an indirect waste receptor
f) intended to catch leaking water from a fixture - ANSWER an indirect
waste receptor
4. T/F: A shut-off valve is the same as a full-open valve.
a) False. There's a pressure drop through a shut-off valve, but not through a
full-open valve.
b) True. But full-open valves are for fuel gas only.
c) False. A shut-off valve is for sewage, and a full-open valve is for wastewater.
d) True. Just the names are different. - ANSWER False. There's a pressure
drop through a shut-off valve, but not through a full-open valve.
5. The U.S. ______________ Office of Drinking Water controls the quality
requirements for water to be classified as potable.
a) Department of Agriculture's (USDA)
b) Environmental Protection Agency's (EPA)
c) Energy and Green Material's (EGM)
d) Department of Sustainability's (USDS)
e) Department of Environmental Procurement's (DEP) - ANSWER
Environmental Protection Agency's (EPA)
6. A well casing should extend above the ground surface ______ inches.
a) Trick question. The casing should never be above the ground surface.
, b) 6 to 12
c) 1 to 3
d) 36 to 48 - ANSWER 6 to 12
7. There are _____ wells (more than 25 feet deep) and _____ wells (25 feet or
less).
a) drilled..... irrigated
b) shallow....... deep
c) shallow... bored
d) deep..... wide
e) deep..... shallow - ANSWER deep..... shallow
8. Installation of supply lines and fittings for all fixtures should be prevent
_______.
a) defective pressure reduction
b) friction
c) inadequate clearance to combustibles
d) indirect venting
e) backflow - ANSWER backflow
9. A(n) ________ is the most effective and dependable method of preventing
backflow.
a) over-fusing
b) air gap
c) mechanical device with moving parts
d) inoperative conjunction - ANSWER air gap
10. The minimum diameter of a water service pipe is typically ________.
a) 1/2-inch
