The Deposit Return System (DRS) project in Bangkok has been operational since 2020, with the main objective of promoting plastic waste recycling and reducing plastic waste in the environment. The project has received cooperation from both the government and private sectors in the installation of Reverse Vending Machines (RVMs) in certain areas, such as shopping malls and public transport stations. Although the project has succeeded in reducing plastic waste and encouraging public participation in recycling to some extent, several challenges have hindered its full expansion. These include the insufficient number of RVMs, a lack of effective public awareness campaigns, and limitations in technology and infrastructure. The absence of clear legal support measures is also a significant factor affecting the long-term development of the project. This article discusses the progress of the DRS project, the operations of the private sector, as well as the issues and constraints encountered. It also proposes the introduction of legislation that can support recycling and enhance the efficiency of the project's implementation in a sustainable manner, particularly through the introduction of a deposit refund scheme for single-use beverage packaging, which could encourage greater public and business involvement in effective plastic waste management.