The study established how leadership influences the sustainability of water projects in Kieni Constituency, Nyeri County. Control Theory was used in the study. An interview guide and semi-structured questionnaires were used to collect primary data for the study. A total of 73 water projects in Kieni Constituency made up the target population, comprising 584 respondents. The sample size was determined using Yamane’s formula, resulting in a sample of 237 respondents. Descriptive and inferential statistics were used to analyze the data, with SPSS version 28 used to examine the relationship between leadership influence and project sustainability. Graphs and tables were used to present the findings. The regression results indicated a significant positive relationship between leadership influence and the sustainability of water projects (B = 0.523, p =.000). The study found that effective leadership significantly contributes to the sustainability of community water projects by promoting transparency, cooperation, communication, and stakeholder trust. Regular stakeholder meetings and equitable leadership selection reflected better governance, although challenges related to resource management and unethical practices remained. The study recommends strengthening leadership capacity through targeted training in ethical conduct and communication, promoting stakeholder collaboration, ensuring integrity in leader selection, and maintaining accountability through mentoring and goal-setting. Effective leadership is crucial for the successful management and sustainability of community water initiatives.