The United State generates the most waste among OECD countries, and there are adverse effects of the waste generation. One of
the most serious adverse effects is greenhouse gas, especially CH4, which causes global warming. However, the amount of waste
generation is not decreasing, and the United State recycling rate, which could reduce waste generation, is only 26%, which is
lower than other OECD countries. Thus, waste generation and greenhouse gas emission should decrease, and in order for that to
happen, identifying the causes should be made a priority. The research objective is to verify whether the Environmental Kuznets
Curve relationship is supported for waste generation and GDP across the U.S. Moreover, it also confirmed that total waste
generation and recycling waste influences carbon dioxide emissions from the waste sector. The annual-based U.S. data from
1990 to 2012 were used. The data were collected from various data sources, and the Granger causality test was applied for
identifying the causal relationships. The results showed that there is no causality between GDP and waste generation, but total
waste and recycling generation significantly cause positive and negative greenhouse gas emissions from the waste sector,
respectively. This implies that the waste generation will not decrease even if GDP increases. And, if waste generation decreases
or recycling rate increases, the greenhouse gas emission will decrease. Based on these results, it is expected that the waste
generation and carbon dioxide emission from the waste sector can decrease more efficiently.