As a nation, Americans generate more waste than any other nation in the world, officially with 4.4 pounds (2.0 kg) of municipal solid waste (MSW) per person per day,[1] with another study estimating 7.1 pounds (3.2 kg) per capita per day.[2] Fifty five percent of this waste is contributed as residential garbage, while the remaining forty five percent of waste in the U.S.'s 'waste stream' comes from manufacturing, retailing, and commercial trade in the U.S. economy.[3] According to the American Society of Civil Engineers, Nevada produces the most waste at "[nearly] 8 pounds (3.6 kg) per person per day".[4] Approximately 90% of all waste produced by Nevadans ends up in landfills. "Wasteful" states Michigan, New Mexico, Wisconsin and Oregon as well as Washington also dominated the list's 5-year period.[5]