JOURNEYMAN PLUMBING COMPREHENSIVE EXAM
2025/2026 QUESTIONS AND ANSWERS GRADED A++
✔✔Cross Contamination - ✔✔Any physical connection or arrangement between two
otherwise separate piping systems, one of which contains portable water and the other,
either water of unknown or questionable safety or stream, gas or chemical, whereby
their exists the possibility for flow from one system to the other, with the direction of flow
depending on the pressure differential between the two systems ("Backflow").
✔✔Developed Length - ✔✔The length of a pipe measured along the center line of the
pipe and fittings.
✔✔Direct-Vent Appliances - ✔✔Appliances that are constructed and installed so that air
from combustion is derived directly from the outdoor atmosphere and all flu gases are
discharged directly to the outdoor atmosphere.
✔✔Fixture Drain - ✔✔The drain from the trap of a fixture to a junction with any other
drain pipe
✔✔Fixture Supply - ✔✔The water supply pipe connecting a fixture to a branch water
supply pipe or directly to a main water supply pipe.
✔✔Flood Level Rim - ✔✔the edge of the receptacle from which water overflows.
✔✔Graywater - ✔✔Water discharge from lavatories, bathtubs, showers, clothes
washers and laundry trays.
✔✔Grease Interceptor (Gravity) - ✔✔plumbing apparatus of not less than 500 gallon
(1893L) capacity that are installed in the sanitary discharge system to intercept free-
floating fats, oils and grease from wastewater discharge. Separation is accomplished by
gravity during a retention time of not less than 30 minutes.
✔✔Horizontal Branch Drain - ✔✔a drainage branch pipe extending laterally from a soil
or waste stack or building drain with or without vertical sections or branches, that
receives the discharge from two or more fixture, drains or branches and conducts the
discharge to the soil or waste stack or to the building drain.
✔✔Horizontal Pipe - ✔✔Any pipe or fitting that makes an
angle of LESS than 45 degrees (0.79 rad) with the horizontal
✔✔Indirect Waste Pipe - ✔✔A waste pipe that does not connect directly with the
drainage system, but that discharges into the drainage system through an air brake or
air gap into a trap, fixture, receptor or interceptor.
, ✔✔Individual Vent - ✔✔A pipe installed to vent a fixture trap and that connects with the
vent system above the fixture served or terminated in the open air.
✔✔Interceptor - ✔✔A device designed and installed to separate and retain for removal,
by automatic or manual means, deleterious, hazardous or undesirable matter from
normal waste, while permitting normal sewage or waste to discharge and to the
drainage system by gravity. (Referred to as "separator")
✔✔Leader - ✔✔An exterior drainage pipe for conveying storm water from roof or gutter
drains to an approved means of disposal.
✔✔Pollution - ✔✔An impairment of the quality of the potable water to a degree that
does not create a hazard to public health, but that does adversely and unreasonably
affect the aesthetic quality of such potable water for domestic use.
✔✔Potable Water - ✔✔Water free from impurities present in amounts sufficient to cause
disease or harmful physiological effects and conforming to the bacteriological in
chemical qualities required of the Public Health Service Drinking Water Standards or the
regulations of the public health authority having jurisdiction. .
✔✔Private - ✔✔In the classification of plumbing fixtures, "private" applies to fixures and
residents and apartments, and to fixtures and non-public toilet rooms of hotels and
motels and similar installations and buildings where the plumbing fixtures are intended
for utilization by a family or an individual.
✔✔Public or Public Utilization - ✔✔In the classification of plumbing fixtures, public
applies to fixtures and general toilet rooms or schools, gymnasiums, hotels, airports,
bus and railroad stations, public buildings, bars, public comfort stations, office buildings,
stadiums, stores, restaurants and other installations for a number of fixtures are
installed so that they're utilization is similarly unrestricted.
✔✔Public Water Main - ✔✔A water supply pipe for public use controlled by public
authority.
✔✔Quick-Closing Valve - ✔✔A valve or faucet that closes automatically when released
manually or that is controlled by a mechanical means for fast-action closing.
✔✔Ready Access - ✔✔that which enables a fixture, appliance or equipment to be
directly reached without requiring the removal or movement of any panel, door or similar
obstruction and without the use of a portable ladder, step stool or similar device.
✔✔Roof Drain - ✔✔A drain installed to receive water collection on the surface of a roof
and to discharge such water into a liter or a conductor.
2025/2026 QUESTIONS AND ANSWERS GRADED A++
✔✔Cross Contamination - ✔✔Any physical connection or arrangement between two
otherwise separate piping systems, one of which contains portable water and the other,
either water of unknown or questionable safety or stream, gas or chemical, whereby
their exists the possibility for flow from one system to the other, with the direction of flow
depending on the pressure differential between the two systems ("Backflow").
✔✔Developed Length - ✔✔The length of a pipe measured along the center line of the
pipe and fittings.
✔✔Direct-Vent Appliances - ✔✔Appliances that are constructed and installed so that air
from combustion is derived directly from the outdoor atmosphere and all flu gases are
discharged directly to the outdoor atmosphere.
✔✔Fixture Drain - ✔✔The drain from the trap of a fixture to a junction with any other
drain pipe
✔✔Fixture Supply - ✔✔The water supply pipe connecting a fixture to a branch water
supply pipe or directly to a main water supply pipe.
✔✔Flood Level Rim - ✔✔the edge of the receptacle from which water overflows.
✔✔Graywater - ✔✔Water discharge from lavatories, bathtubs, showers, clothes
washers and laundry trays.
✔✔Grease Interceptor (Gravity) - ✔✔plumbing apparatus of not less than 500 gallon
(1893L) capacity that are installed in the sanitary discharge system to intercept free-
floating fats, oils and grease from wastewater discharge. Separation is accomplished by
gravity during a retention time of not less than 30 minutes.
✔✔Horizontal Branch Drain - ✔✔a drainage branch pipe extending laterally from a soil
or waste stack or building drain with or without vertical sections or branches, that
receives the discharge from two or more fixture, drains or branches and conducts the
discharge to the soil or waste stack or to the building drain.
✔✔Horizontal Pipe - ✔✔Any pipe or fitting that makes an
angle of LESS than 45 degrees (0.79 rad) with the horizontal
✔✔Indirect Waste Pipe - ✔✔A waste pipe that does not connect directly with the
drainage system, but that discharges into the drainage system through an air brake or
air gap into a trap, fixture, receptor or interceptor.
, ✔✔Individual Vent - ✔✔A pipe installed to vent a fixture trap and that connects with the
vent system above the fixture served or terminated in the open air.
✔✔Interceptor - ✔✔A device designed and installed to separate and retain for removal,
by automatic or manual means, deleterious, hazardous or undesirable matter from
normal waste, while permitting normal sewage or waste to discharge and to the
drainage system by gravity. (Referred to as "separator")
✔✔Leader - ✔✔An exterior drainage pipe for conveying storm water from roof or gutter
drains to an approved means of disposal.
✔✔Pollution - ✔✔An impairment of the quality of the potable water to a degree that
does not create a hazard to public health, but that does adversely and unreasonably
affect the aesthetic quality of such potable water for domestic use.
✔✔Potable Water - ✔✔Water free from impurities present in amounts sufficient to cause
disease or harmful physiological effects and conforming to the bacteriological in
chemical qualities required of the Public Health Service Drinking Water Standards or the
regulations of the public health authority having jurisdiction. .
✔✔Private - ✔✔In the classification of plumbing fixtures, "private" applies to fixures and
residents and apartments, and to fixtures and non-public toilet rooms of hotels and
motels and similar installations and buildings where the plumbing fixtures are intended
for utilization by a family or an individual.
✔✔Public or Public Utilization - ✔✔In the classification of plumbing fixtures, public
applies to fixtures and general toilet rooms or schools, gymnasiums, hotels, airports,
bus and railroad stations, public buildings, bars, public comfort stations, office buildings,
stadiums, stores, restaurants and other installations for a number of fixtures are
installed so that they're utilization is similarly unrestricted.
✔✔Public Water Main - ✔✔A water supply pipe for public use controlled by public
authority.
✔✔Quick-Closing Valve - ✔✔A valve or faucet that closes automatically when released
manually or that is controlled by a mechanical means for fast-action closing.
✔✔Ready Access - ✔✔that which enables a fixture, appliance or equipment to be
directly reached without requiring the removal or movement of any panel, door or similar
obstruction and without the use of a portable ladder, step stool or similar device.
✔✔Roof Drain - ✔✔A drain installed to receive water collection on the surface of a roof
and to discharge such water into a liter or a conductor.
