Inside the State of Washington a license is required for plumbing. All plumbing businesses need to register with the Washington Department of Labor and Industries.

A plumbing License covers any plumbing work including sanitary drainage, water supply, storm drainage, and even natural gas piping. All applicants will need to pass the "Business and Law" exam, and have prior approval from the Washington Department of Labor and Industries - Contractor's Registration Section prior to testing.

This book covers the written portion of the exam. We create these self-practice test questions module referencing the concepts and principles currently valid in the exam.

Each question comes with an answer and a short explanation which aids you in seeking further study information. For purpose of exam readiness drilling, this product includes questions that have varying numbers of choices.

Some have 2 while some have 5 or 6. We want to make sure these questions are tough enough to really test your readiness and draw your focus to the weak areas.

Think of these as challenges presented to you so to assess your comprehension of the subject matters. The goal is to reinforce learning, to validate successful transference of knowledge and to identify areas of weakness that require remediation.

The questions are NOT designed to “simulate” actual exam questions. “realistic” or actual questions that are for cheating purpose are not available in any of our products.

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