Electricity consumption, the main contributor in the LS process, has its highest impacts in the water scarcity (11.1%). The employment of the dry sludge as fertilizer, avoiding the production of the same amount of NPK, is responsible of a dramatic reduction of the impact observed, since for 5 of the 18 analyzed categories (MRu, FEu, MEu, PMF and LOb) it even overcomes the direct impacts.