The objectives of this research are as follows: 1) to study working motives of Assistant Governor (Administration) personnel at Metropolitan Waterworks Authority. 2) to study working motivation of Assistant Governor (Administration) personnel at Metropolitan Waterworks Authority. 3) to study the relationship between working motives of Assistant Governor (Administration) personnel at Metropolitan Waterworks Authority and working motivation of Metropolitan Waterworks Authority. 4) to compare working motives of Assistant Governor (Administration) personnel at Metropolitan Waterworks Authority classified by demographic factors. 5) to compare working motivation of Metropolitan Waterworks Authority classified by demographic factors. This research is a survey research using questionnaire as a research instrument in order to collect the data. The research sample used in this study comprised of 149 Assistant Governor (Administration) personnel at Metropolitan Waterworks Authority: Legal Department, Central Administration Department and Procurement and Supplies Department. Data was analyzed by using descriptive and inferential statistics. The research results can be summarized as follows: