The rapid growth of communities, including residential development projects, has led to a continuously increasing demand for tap water. Over the past period, the number of water users has risen significantly, resulting in a greater need for personnel in related fields. Therefore, the Occupational Standards and Professional Qualification in the Public Utilities and Public Services Business Professional Sector, specifically in the water utility business, play a crucial role in preparing personnel to be well-equipped, possess competencies that align with industry requirements, and meet recognized standards. This ensures the readiness to serve the large number of water users across various areas, contributing to national development and enhancing the quality of life for the population. Further details about Occupational Standards in the Public Utilities and Public Services Business Professional , visit: http://tpqi-net.tpqi.go.th/home/occ/industrialInfo/PUM