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Waste in the United States
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 〔(EPA Fact Sheet, 2012 )〕, with another study estimating 7.1 pounds per capita per day.〔Humes, E. (2012) Garbology: Our dirty love affair with trash. Avery, 264 pp.〕 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.〔http://www.reuters.com/article/2008/05/29/idUS108659+29-May-2008+PRN20080529 March 2008, Cashing in on Climate Change, ''IBISWorld''〕 Based on proprietary data released to the public, Nevada was named America's "Most Wasteful State" for the years 2005-2010; where each resident threw away over 14 pounds of non-recycled, unreused items, often ending up into landfills and incinerators per day, eight pounds over the national state daily throwaway average. "Wasteful" states Michigan, New Mexico, Wisconsin and Oregon as well as Washington also dominated the list's 5-year period.
==Definitions==
Waste may be defined differently in legislation and regulations of the federal government or individual states. Title 40 of the Code of Federal Regulations dealing with protection of the environment contains at least four different definitions of waste at sections 60.111b, 61.341, 191.12 and 704.83. Definitions may apply broadly to solid, liquid, and gaseous forms or may be specific to one or a subset identified by a threshold characteristic such as toxicity or radioactivity. Discarding, discharge, or disposal (as opposed to sales) is often a requirement for identification as waste, although stored or recycled material may be included within some definitions; and those definitions may reduce recycling options.〔King, James J. ''The Environmental Dictionary'' (1995) John Wiley & Sons p.745 ISBN 0-471-11995-4〕 Comparative quantification of waste may be difficult if the waste material is intentionally diluted in a handling or disposal process (such as diluting sanitary waste with clean water in the process of flushing a toilet.) Dilution may remove a material from a definition of waste by reducing concentrations below a defined toxicity or radioactivity threshold.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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