- Alberta Water and Wastewater Operators (AWWOA)
- American Membrane Technology Association
- American Water Works Association
- AquaEspaña
- Association of Water Technologies
- Caribbean Desalination Association (CaribDA)
- European Desalination Socitety
- International Desalination Association
- Southwest Membrane Operator Association
- South Central Membrane Association
- Southeast Desalting Association (SEDA)