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On Monday, May 6, 2024, the Washington Suburban Sanitary Commission (WSSC) licensing exams will be updated.

Exam Bulletin

The updates include the following,

  • The exam has been updated from the 2018 to the 2021 edition of codes
    • 2021 WSSC Plumbing and Fuel Gas Code
    • 2021 International Plumbing Code
    • 2021 International Fuel Gas Code
  • Safety questions are based on “Code of Federal Regulations - 29 CFR Part 1926, Selections by PSI”
  • The distribution of questions for each exam has been revised

Please see the exam bulletin for the following,

  • Eligibility requirements
  • Applying for the exam
  • Preparing for the exam
  • Reference materials
  • Exam content
  • Exam Fees
  • Scheduling procedures
  • Test center location
  • Sample questions
  • Exam application forms

The WSSC exams are proctored by PSI Services LLC (PSI). PSI is a nationally recognized test development and test administration services company headquartered in Glendale, California.  For information concerning the examinations, call PSI at (855) 746-8173.

If you have any other questions, please contact Chris Imhof, Technical Standards Engineering Manager, or 301.206.8514.