Eligibility for certification will require completion of the Basics and Fundamentals modules and appropriate Core module in WQA's Modular Education Program (MEP).
- Certified professionals holding the titles of CWS-V and CWS-VI prior to May 1, 2015 were re-designated as Master Water Specialists
- CWS-II, CWS-III and CWS-IV title holders prior to May 1, 2015 were re-designated simply as Certified Water Specialists. All Certified Water Specialists may work through the advanced curriculum of the new MEP program to achieve the Master Water Specialist title
- Sales Representatives (CSR) title holders prior to May 1, 2015 were retitled as Certified Water-Treatment Representatives (CWR). They may pursue any other core certification title through the MEP.