Water softeners can be used for the removal of total hardness and trace heavy metals in the advanced treatment of industrial wastewater; this dataset includes primary raw materials, auxiliary materials, and energy consumed during production, while infrastructure such as production equipment and factory construction are excluded from the system boundary; the life cycle inventory is compiled from data sourced from multiple references; the production process of Water softeners involves procedures such as mixing coagulants, additives and solvents, formulation adjustment, and packaging.