“…Complexity of sanitary structures and the characteristics of treatments provided influence the production of HCW, in terms of quantities and composition [6,7]. Production ranges from 1,3 to 2,5 kg every occupied bed and every day and from 0,5 to 1,0 in developing countries [7,8]. Some specialized structures can reach higher rate of production: for example, in Italy, specialized sanitary structure Ismett, has produced more than 13 kg/occupied bed every day as a mean value of the years 2010-2012 [5].…”