Plumbing Code Amendments

2018 Washington State Plumbing Code

2018 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • Effective February 1, 2021 

2015 Washington State Plumbing Code

2015 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • NOTE: See also WSEC Section C404 for additional piping requirements
  • Effective July 1, 2016    

2012 Washington State Plumbing Code

2012 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • Effective July 1, 2013

2009 and Older Washington State Plumbing Code

2009 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • Effective July 1, 2010

2006 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • Effective July 1, 2007

2003 Uniform Plumbing Code 

  • Includes adoption of Appendices A, B and I
  • Effective July 1, 2004