Education on the Concept of Waste Bank, Green Economy, and Circulating Money to the Community is carried out in order to understand how its application becomes a household income opportunity, for example by becoming a new source of income from saving household waste that has been applied so that it is able to read the economic and environmental problems that occur. How the impact of the Waste Bank on income from household waste. Which is related to improving household welfare through community knowledge / understanding related to Waste Bank, Green Economy, and Circulating Money. From this community service, the results show that with the existence of the Waste Bank, the application of the Green Economy concept can be seen from the collection of household waste easily collected at the Waste Bank, the community becomes a customer, has savings, withdraws money, then continues consumption shopping from the money, which means there is buying and selling activity in the market because there is money circulating in the community. This affects economic activity in the Medan Belawan sub-district.

The purpose of this service is to educate the Concept of Waste Bank, Green Economy, and Money Supply to the Community in Medan Belawan District. The special target in this community service is for the workers of the Blessing Waste Bank in Medan Belawan District to know what the Waste Bank, Green Economy, and Money Supply to the Community in Medan Belawan District is, how its application is an opportunity for household income, for example by becoming a new source of income from saving household waste that has been implemented so that they are able to read the economic and environmental problems that occur. The material presented at this community service is: what is a Waste Bank, Green Economy, and Money Supply, how the impact of the Waste Bank on income from household waste. Which can improve household welfare through public knowledge/understanding related to Waste Banks, Green Economy, and Money Supply. From this community service, it shows the results that with the existence of the Waste Bank, the application of the Green Economy concept can be seen from the collection of household waste that is easily collected at the Waste Bank, the community becomes a customer, has savings, withdraws money, then continues to spend consumption from the money which means that there are selling and buying activities in the market because of the money circulating in the community. This affects economic activities in the Medan Belawan District area.

Rivers are places, containers, and networks of water irrigation from springs to estuaries. The existence of rivers with their nature that flows from upstream to downstream has the potential for opportunity value and externality effects between upstream and downstream or along river flows (Pangesti, 2000). Eco-Tech-Edu Tourism Combination and integration of learning across applicable programs, the flow of the Babarsari river looks clear and flows well, so this is used in the construction of living labs and industrial parks. In its use as ecotourism, it is necessary to analyze the burden of pollutants. In determining the burden of pollutants, it is necessary to carry out water analysis and water status analysis based on the Decree of the Minister of Environment no. 115 of 2003 concerning guidelines for water quality status.