The research project entitled “Environmental protection of water bodies from acid mine drainage (AMD) using permeable reactive barrier as passive treatment system” aims to mitigate the negative impacts of mining activities to our bodies of water considering that the Philippines ranks among the richest countries in the world in terms of gold, copper and nickel reserves. The AMD is a wastewater discharge from some mining activities and is typically acidic and contains considerable amounts of hazardous components which could greatly affect the receiving bodies of water. This AMD will be treated using a permeable reactive barrier (PRB) which would act as a unit process that could neutralize the acidity and remove the toxic components. The PRB will utilize locally available materials like limestone, mine wastes, concrete wastes and fly ash as neutralizing and reactive media. The parameters that will be monitored includes pH, heavy metal concentrations, conductivity, oxidation-reduction potential (ORP), total dissolved solids (TDS), dissolved oxygen (DO) and sulfates concentrations. The treated effluent will be ensured to pass the effluent standard set by the Department of Environment and Natural Resources (DENR) under the recently amended law, i.e. DENR Administrative Order 2016-08 (DAO 2016-08). The success of the project will not only help protect the most important resource, i.e. water, but will also help achieve a sustainable green mining activity for operational mines and mitigate the release of AMD from abandoned mines.