Kleinfelder employees participate in many associations, organizations, and professional groups across the country and abroad. The following are some of the groups that have benefited from the skills of our employees:
- Australasian Bat Society
- Australian Association of Bush Regenerators
- Australian Contaminated Land Consultants Association
- Australian Human Resources Institute
- Australian Land and Groundwater Association
- Australian Network for Plant Conservation
- BirdLife Australia
- Ecological Society of Australia
- Engineers Australia
- Engineers without borders
- Environment Institute Australia New Zealand
- Environment Institute of Australia and New Zealand (Executive Committee Member SE QLD Division)
- Fire Protection Association of Australia
- Geological Society of London
- Hunter Bird Observers Club
- Hunter Business Chamber
- Hunternet
- Institute of Fire Engineers Australian Branch
- International Association for Impact Assessment
- International Association of Hydrogeologists
- International Erosion Control Association – Australasia
- International Erosion Control Association (Australasia)
- National Groundwater Association
- Society for Ecological Restoration
- The Australian Mammal Society
- The Ecological Consultants Association of NSW
- The Weed Society of NSW Inc.
