A sanitary landfill is a space designated for the final disposal of waste generated by human activity. Valorminho owns a sanitary landfill located in São Pedro da Torre, Valença. Therefore, all urban waste, resulting from the collection of unsorted materials, is properly treated, guaranteeing a rigorous environmental protection system and adequate drainage of leachate and biogas.

The sanitary landfill has a biogas drainage network, which is directed towards energy recovery. Valorminho's sanitary landfill is also subject to a rigorous environmental monitoring system, including the quality control of leachate, biogas, groundwater, surface water, and topographic features.