Messe Frankfurt Exhibition GmbH
American Backflow Prevention Association (ABPA)
American Society of Sanitary Engineering (ASSE)
APHC Ltd. (Association of Plumbing and Heating Contractors)
British Plumbing Employers Council (Training) Limited
Bathroom Manufacturers Association
The Canadian Institute of Plumbing and Heating (L'Institut Canadien de Plomberie et de Chauffage)
The Chartered Institute of Plumbing and Heating Engineering (CIPHE) - United Kingdom
Danish Mechanical and Electrical Contractors Association
Danish Union of Plumbers and Pipefitters (Blik-og Rorarbejderforbundet)
Indian Plumbing Association (IPA)
Institute of Plumbing Australia Incorporated (IoPA)
Institute of Plumbing of South Africa (IoPSA)
International Code Council
The IAPMO Group
Joint Industry Board for Plumbing Mechanical Engineering Services in England and Wales
Master Plumbers & Mechanical Contractors Association NSW
Master Plumbers & Mechanical Services Association of Australia (MPMSAA)
Master Plumbers and Gasfitters Association of Western Australia (MPAWA)
Master Plumbers, Gasfitters & Drainlayers NZ Inc.
Mechanical Contractors Association of Alberta
Mechanical Contractors Association of America (MCAA)
Mechanical Contractors Association of Canada
National Inspection Testing Certification (NITC)
NSF International
Plumbing Facilities Committee of China Construction Metal Structure Association
Plumbing Industry Commission, Victoria, Australia
Plumbing-Heating-Cooling Contractors-National Association (PHCC)
Polska Korporacja Techniki Sanitarnej, Grzewczej, Gazowej i Klimatyzacji (The Polish Association of Sanitary, Heating, Gas and Air-Conditioning Technologies)
Plumbing Manufacturers Institute (PMI)
Scottish & Northern Ireland Plumbing Employers' Federation (SNIPEF)
Singapore Plumbing Society
Swiss and Liechtenstein Association of Technical Building Contractors (suissetec)
United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada
Zentralverband Sanitär Heizung Klima (ZVSHK)
