Water security is one of the main serious constraints for development in Egypt. Furthermore, it is essential to develop strategies for the water sector in an integrated way. However, this research develops a new integrated water security index (IWSI) based on the analytic hierarchy process (AHP) to highlight the evaluation of the water security situation in Egypt. The new proposed index is strongly correlated with fifteen indicators that selected to evaluate the five main key components (Availability Water Security (AWS), Economic Water Security (EWS), Water-Related Disasters Security (WDS), Environment Water Security (EVWS), and Governance and Water Management Security (GWMS)). The developed integrated water security index (IWSI) evaluates the status of water security in Egypt. The study concludes that IWSI is considered a good water management tool to help decision-makers prioritize future water development plans and improve resource management. Moreover, it is highly recommended to continue improvement in water security index assessment for monitoring the rapid variability in its integrated indicators.