Plumbing Code and Regulations
Domain overview
The Plumbing Code and Regulations domain tests how North Dakota regulates plumbing work: the adopted code, State Plumbing Board rules, licensing, permits, inspections, and enforcement. North Dakota's State Plumbing Board adopts the Uniform Plumbing Code with state amendments, so the exam expects you to know not only pipe sizes but who may do the work and when the inspector must see it.
Core rules
- Plumbing work must be performed by a licensed plumber or under an approved license, and journeyman scope is limited by the license held.
- A permit is normally required before installing, altering, or replacing plumbing, including water heaters and repipes; emergency repairs still require prompt permit application and inspection.
- Rough-in inspections must be requested before covering DWV or water piping; final inspection comes after fixtures, testing, and cleanup.
- The adopted model code is amended by state board rules; local ordinances may add stricter requirements, so the applicable local authority is part of the code check.
- Inspectors can approve, reject, or require correction; concealed work without inspection can be ordered uncovered at the installer's cost.
Worked example
A journeyman is asked to repipe two bathrooms in a rental house. The owner wants the walls closed the same day. The correct sequence is permit first, then installation, then a rough-in inspection with the DWV system under test and water piping visible. Only after approval may drywall close the wall. If the crew closes the wall first, the inspector can require removal of the drywall to expose the work. The reason is that code compliance cannot be verified after concealment.
Traps
Do not assume the state code and local code are identical. Do not treat a phone approval as a permit. Do not let a helper perform licensed work outside supervision. Do not miss the final inspection after fixtures are set.