Abstract Despite efforts to adopt at-source waste separation, Tan An city’s solid waste management is under strain due to a lack of infrastructure. The demand of the scrap recycling market has resulted in the forming of a network of informal scrap trading establishments everywhere. Informal garbage workers efficiently collect (pick, buy) scraps from homes, grocery stores, businesses, workplaces, schools, parks, dump sites, and landfills. This boosts waste segregation at the source. Therefore, in Tan An city, most households separate recyclables for sale to informal waste workers. According to survey results, there are approximately 247 informal waste workers in Tan An City engaged in recyclables collection at a daily average rate of 69.66 kilograms per person. Thus, the total quantity of recyclables collected by this sector is approximately 17,260 kg per day, contributing to the daily diversion of 11.4% of waste from landfills. It helps that the annual savings to the city are estimated at VND 2.75 billion for waste collection and transportation and VND 2.47 billion for waste treatment. It also contributes to the creation of jobs, and the reduction of plastic emissions into the ocean because approximately 28.39% of recyclables are plastic waste, and the reduction of approximately 3.076 tons of CO2 emissions into the atmosphere if this amount of waste is transported to a landfill. This study could initiate further research to find a way to introduce modern initiatives that aim to improve working conditions and the environmental impact of the informal sector and include the informal sector into the EPR scheme as their integration is related to social, labor, health, economic, and other issues.