T The regional people\\\'s representative council (dprd) is the representative body of the local community and functions as part of the local government. one of the functions of the dprd is oversight. there are issues with drainage infrastructure in south tangerang, such as insufficient water absorption in some areas leading to flooding, and discrepancies in the 2023 drainage budget. this raises questions about the role of the dprd in overseeing drainage infrastructure and the challenges faced in monitoring drainage infrastructure in 2023. this study employs a socio-legal method obtained through interviews. the results and conclusions of this study are that the supervisory role of the south tangerang dprd is indirect supervision, such as commission iv working meetings, and the drainage budget up to the third quarter only reached 58.25%, indicating that the dprd supervision of the 2023 drainage program is not optimal based on article 149 paragraph 1 letter b of law 23 of 2014 concerning regional government. additionally, the challenges faced in the oversight of the tangerang selatan city dprd include a lack of technical understanding among dprd members regarding the infrastructure development process and ideological differences among dprd members.