2025-2026
Aboveground rough-in - Answers The second phase of a plumbing project. during this phase,
holes are cut in walls, ceilings, and floors. Then, supply and waste pipes are attached or hung so
they can be connected to fixtures. Also referred to as stack out, top out, or in-wall rough-in.
Appurtenances - Answers Accessories or apparatus that require no demand from the water
supply side and add no load to the waste side.
Aqueduct - Answers A man-made channel used to carry water
Aquifer depletion - Answers The use of underground fresh water at a rate faster than it can be
replenished.
Backflow - Answers The flow of contaminated water into the freshwater system resulting from a
cross-connection between potable and non potable water systems
Backflow preventer - Answers A device that prevents non potable water from entering a potable
supply system
Bioswale - Answers A depression in the ground that filters pollutants from stormwater
Chlorine - Answers A heavy, greenish-yellow gas used as a disinfectant in water treatment.
Chlorine should be handled only when wearing appropriate personal protective equipment
Code - Answers A requirement published by state and local governments to establish minimum
standards for various types of construction. A code carries the force of law.
Cross-connection - Answers An arrangement between a potable water system and a non
potable water system in which an accidental pressure differential between the two systems
causes back flow of contaminated water into the fresh-water system.
Disinfection - Answers The process of destroying harmful organisms in potable water
Drain, waste, and vent (DWV) - Answers A piping system that combines sanitary drainage with
venting.
Ethics - Answers A set of principles and values that guide an individual's conduct
Filtration - Answers The process of cleansing water to remove particles and chemicals
Finish - Answers The third phase of a plumbing project. During the finish phase, plumbers install
fixtures, appliances, water purification systems, water heaters, and controls. Also referred to as
trim-out or trim finish.
Fixture - Answers A device that receives water from a water supply line. Common fixtures