Certified Plumbing Designer
Free Certified Plumbing Designer (CPD) practice test with instant feedback and detailed answer explanations. Prepare for your certification exam.
About the Author
Michael TorresBS Civil Engineering, Master Plumber License
Licensed Contractor & Trades Certification Expert
Purdue UniversityMichael Torres earned his Bachelor of Science in Civil Engineering from Purdue University and holds master plumber and general contractor licenses in multiple states. With 18 years of field experience and 8 years teaching apprenticeship programs, he is a trusted resource for tradespeople preparing for journeyman and master-level licensing exams.