Find a Certified Professional

Certified Cooler Technician (CCT): Typically professionals who specialize in the installation and service of point-of-use water coolers.

Certified Water Treatment Representative (CWR): Typically professionals who focus on solving aesthetic water problems.

Certified Water Specialist (CWS): Typically professionals who provide solutions to “problem water” issues and health-related contaminants.


Certified Installer (CI): Typically professionals who specialize in installing water quality improvement products.

Certified Service Technician (CST): Typically professionals who troubleshoot and correct the operation of water quality improvement products.

Master Water Specialist (MWS): Typically experienced professionals who address advanced residential water treatment applications. 

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Certified water treatment professionals are individuals who have completed a voluntary credentialing process through WQA's Professional Certification Program. To become a WQA certified professional, the candidate must pass a comprehensive examination and accept WQA's Code of Ethics for the Water Quality Improvement Industry. WQA's program tests and certifies only individuals, not dealerships or companies. Certified professionals are typically employed by WQA member companies, but WQA membership is not required for certification.

If you are having trouble locating a certified water treatment professional, or believe a professional's contact/certification information may be listed incorrectly, please contact WQA's Professional Certification Department at