Memberships 
Royal Haskoning holds corporate memberships with the following organisations and associations

ACE (incl FIDIC)
Anaerobic Digestion and Biogas Association (ABDA)
Achilles – UVDB
Association of Diving Contractors (ADC)
Association of Geotechnical and Geoenvironmental Specialists (AGS) Association for Project Safety (APS)
British Geological Survey (BGS) (Copyright License)
British Standards Institution
Building Services Research and Information Association (BSRIA)
Building Cost Information Service (BCIS)
Central Dredging Association (CEDA)
CHAS (Contractors Health & Safety Assessment Scheme)
CIRIA
CIWM (Chatered Institution of Wastes Management)
CIWEM
Coastnet (Eurocoast)
Concrete Bridge Development Group
Concrete Society
Constructionline
Copyright Licence Agency
Data Protection Register
Environmental Industries Federation (EDIE)
European Wind Energy Association (EWEA)
FPAL
Institute of Environmental Management and Assessment (IEMA)
Institute of Oceanographic Sciences (MIAS)
International Cargo Handling Co-ordination Association (ICHCA)
International Navigation Association (PIANC)
Middle East Association (MEA)
NEC Users Group
Newspaper Licensing Agency (NLA)
North East Chamber of Commerce (NECC)
Ordnance Survey (Copyright Licence)
Peterborough Chamber of Commerce
Peterborough Environment City Trust (PECT)
Port Skills and Safety Ltd (PSS)
Renewable UK
River Restoration Centre
Society of Maritime Industries
Steel Construction Institute (SCI)
Supply Line
Trident Forum
Tracker

During 2002, Royal Haskoning was awarded an ISO 9001:2000 quality certificate and Royal Haskoning UK was awarded an ISO 14001 certificate – the international environmental management standard. In 2008 Royal Haskoning NL was awarded an ISO 14001 certificate,making it only the second consultancy firm in the Netherlands to be ISO 14001 Approved.

For the marine industry Royal Haskoning complies with the requirements of Lloyds Register Quality Assurance to NEN-EN-ISO 9001:2000, which is used throughout the firm. Approval Certification Number is 655229.