The American Cleaning Institute (ACI) released its 2013 Sustainability Report which shows overall decreases by member companies in four environmental metric data points: energy use, greenhouse gas emissions, water use and solid waste generation. Data spanned all three reporting years (2009, 2010 and 2011). Overall, 2011 showed a reduction in the industry’s footprint for all four environmental metrics compared to 2009. During this period, energy use decreased 9%, greenhouse gas (GHG) emissions decreased 7%, water use decreased 5% and solid waste generation decreased 17%. There was a 12% decrease in GHG emissions from 2010 to 2011.