ASPE Announces the New Green Plumbing Design On-Demand Certificate Program


We are pleased to announce that our popular Green Plumbing Design (GPD) certificate program is now available entirely on demand on ASPE Education. This new self-paced online program will enable you to earn your GPD certificate at your own speed, in your own timeframe.

Developed by Doug Nelson, PE, GPD, instructor of the previous in-person GPD workshops, this new online program contains seven multi-part modules that will help you refine your sustainable design skills in the areas of:

  • Water conservation
  • Standards and regulations
  • Solar water heating
  • Drain water heat recovery
  • Water temperature maintenance systems
  • Safe energy conservation systems
  • Water quality assessments
  • Water treatment
  • Rainwater harvesting and graywater systems
  • Condensate collection
  • Decentralized water and wastewater systems
  • And more!

Once you have completed each of the modules in sequence, an exam will test the knowledge you have gained. If you successfully pass the exam, you will be awarded the GPD certificate and will be able to use the GPD designation after your name.


You must be either Certified in Plumbing Design (CPD) or a Professional Engineer (PE) to be eligible to earn the GPD certificate. The cost is $500 for ASPE members and $600 for nonmembers. You can access the program on ASPE Education.

About the GPD Certificate

The Green Plumbing Design certificate program, sponsored by ASPE and the International Association of Plumbing and Mechanical Officials (IAPMO), is for engineers and designers with advanced skills in sustainable plumbing system design and consulting. The GPD certificate denotes professionals with a high level of experience and training in sustainable practices and signifies those who are dedicated to ensuring the efficient use of our precious water resources via water-conserving plumbing system designs for commercial and residential applications.

Scroll to Top