Globally Monitoring has become an important tool through which environmental, economic and social sustainability can be attained. Monitoring helps those interested with initiatives with determining that progress is being made in accordance with goals. The study generally determined how monitoring practices influence projects performance at the water sector trust fund. Specifically, the study focused on how monitoring planning, monitoring tools, monitoring techniques and adoption of monitoring practices influences project performance. Adoption of descriptive research design was adhered to determine the influence of monitoring practices on performance of projects at the water sector trust fund. The target population consisted of 275 persons drawn from various departments in the organization. This study utilized primary data using semi-structured questionnaire. Analysis of data followed a descriptive analysis as well as the inferential analysis such as the application of regression. The data analyzed was tabulated and presented in standard deviation and percentage form. The study established that monitoring planning, monitoring tools, monitoring techniques and adoption of monitoring practices had a positive and significant relationship with project performance. The study concluded that a well planned M&E helps the project team to get a better understanding of the target population’s needs which helps to define the scope of the project and design objectives that are relevant, measurable and achievable. Monitoring tools helps in knowing if the intended results are being achieved as planned, what actions are needed to achieve the intended results during the project implementation, and whether these initiatives are creating a positive impact towards the project.