“…The main options for WFS reuse are the replacement of fine aggregate in concrete [2,[5][6][7], cement factories [8,9], brick furnaces [10][11][12], embankments [13,14] or structural fills [14,15]; some studies guarantee their suitability for the ceramic [16][17][18][19] and glass sectors [20,21] but to date there are no full-scale applications. The unbound applications of WFS that do not involve their immobilization in a matrix are widely used worldwide; this type of use requires greater attention, as WFS, in contact with rainwater, can release contaminants that can affect the conditions of surface and groundwater, increasing risks for human health and the environment.…”