Purpose: This study aims to investigate the relationship of the national culture of Saudi Arabia to the organizational culture of National Water Company (NWC) and its effects on the organizational performance of the NWC. Methodology: The research utilized Hofstede's cultural dimensions to provide a picture of the national culture. Correlation analysis was used to determine the relationship between the dimensions and phrases representing the culture of the organization. Results: The results showed that almost all phrases correspond in the same direction with the respective dimensions. The results imply that the culture of NWC reflects the national culture since NWC has a high-power distance index, high masculinity, and high uncertainty avoidance. The findings of this study present a deeper understanding of authoritative culture and its effects on performance execution in KSA. The study found that organizational culture can be considered as regulating glue that holds the general association together. The findings indicate that the association's standards and qualities have a solid effect on all individuals connected with the association. The limitation of this study is that research has been carried out without considering the effects of change management on the NWC in Saudi Arabia.