The Residential Plumbing Fundamentals assessment is designed to evaluate the knowledge and skills necessary to perform common plumbing tasks within residential buildings and facilities, covering standard building codes such as the Uniform Plumbing Code, pipe materials and their appropriate uses, troubleshooting and repair, and water heaters. The test measures skill-based knowledge across four primary focus areas: Plumbing Systems and Components (including Water Supply and Distribution Systems, Drain-Waste-Vent Systems, and Plumbing Fixtures, Valves, and Fittings), Pipe Materials and Their Applications (including identification, appropriate use, and joining methods), Troubleshooting and Repair of Common Plumbing Issues (including leak and clog diagnosis, toilet and faucet repair, and water pressure troubleshooting), and Water Heaters (including types, installation, venting, maintenance, and safety devices). The assessment uses Multiple Choice and Multiple Correct Answer questions drawn from a large question pool to help prevent cheating, and one or more questions are individually timed to further deter cheating and improve predictive performance.

Topics covered by this test include:

Following completion, the test produces a Candidate Selection Report that includes an overall score and detailed scores for each attribute.

The Candidate Selection Report also provides expert interview questions that help you probe critical or low-scoring areas, along with a guide for noting your evaluation of the candidate's responses. Consistent use of an interview guide is an important part of gaining better candidate insights and making better hiring decisions.

Note that while the Residential Plumbing Fundamentals assessment is a useful and efficient instrument for confirming a base level of skill or knowledge about this important topic, it is not intended to pinpoint the exact level of candidate or skill. We recommend that skills tests, like this one, be used in parallel with other measurements, such as cognitive ability, job fit, and behavioral history. Each different type of test provides a valuable piece of information you can use when evaluating potential job performance.