This study aims to demonstrate the deficiency in evaluating the effectiveness of the asset management strategy in the Omani water sector. The majority of assets do not have a systematic and appraisal process, which created uncertainty in terms of the role they play in increasing overall service availability. The objectives of this research are based around identifying the extent of the impact of an asset management strategy on increasing operational efficiency, as well as the existence of an advanced infrastructure for water assets and its effect on increasing operational efficiency. In order to achieve the objectives of this study, a questionnaire was designed for the field survey process that contains comprehensive questions for the objectives and hypotheses of the study according to the linker 5-points scale. The questionnaire was distributed to employees working in the water sector and logistics services sectors who have a relationship with asset management and the number of participants and respondents to the questionnaire was 157 employees. The study reached many results, the most important of which are the following: First: The Public Water Authority does not have an integrated strategy in asset management, and it needs to work out an effective strategy aimed at increasing operational efficiency and non-stop service for consumers. Second: There must be an infrastructure for the Public Authority for Water - Diam to enable it to set up accurate programs for periodic and routine maintenance of water assets to increase operational efficiency for a longer period. Third: The effect of a strategy for managing water assets and an integrated infrastructure on increasing the effectiveness of operating efficiency and raising the level of service and continuity in a sustainable manner in accordance with the regulations and policies adopted in the Omani water sector. Key word: Asset management strategy, Infrastructure for assets, Omani water sector.