CWWA partner with a number of organisations in completing various projects. Below are a list of CWWA Regional Collaborators:
- Caribbean Centre for Renewable Energy and Energy Efficiency (CCREEE)
- Caribbean Community Climate Change Centre (CCCCC)
- Caribbean Development Bank (CDB)
- Caribbean Water and Sewerage Association Inc. (CAWASA)
- Caribbean Utilities Employees Association (CUEA)
- Caribbean Desalination Association (CaribDA)
- Caribbean Regional Fund for Waste Water Management (CReW)
- Caribbean Waternet
- Canada Water and Wastewater Association (CWWA)
- Economic Commission for Latin America and the Caribbean (ECLAC)
- Global Water Partnership-Caribbean (GWP-C)
- Global Environment Facility – Integrating Watershed and Coastal Area Management (GEF-IWCAM)
- Global Water Operators Partnership Alliance (GWOPA)
- Inter-American Association of Sanitary and Environmental Engineers (AIDIS) (spanish acronyms)
- Inter-American Development Bank (IDB)
- Organization of American States (OAS)
- Pan American Health Organization (PAHO)
- The Caribbean Institute for Meteorology and Hydrology (CIMH)
- The Caribbean Community (CARICOM)
- United Nation Environmental Program (UNEP)
- Water Supply and Sanitation Collaborative Council (WSSCC)
- World Health Organization (WHO)