This study was conducted to detect presence of heavy metals (As, Pb, Hg) in Batissa angulata (Clams) obtained from two selected barangays of Mondragon, Northern Samar, Philippines. Physical properties of clam’s meat samples were also determined. Clams meat extract from Brgy Cablangan are darker in color as compared to calm samples from Brgy Talolora. Both clams’ extracts have rotten egg odor and are miscible in water and ethanol but immiscible in hexane. The heavy metals in samples were analyzed using qualitative and quantitative procedures. Results showed that only mercury (Hg) metal contamination was detected from clam’s meat extract from Brgy Cablangan. Quantitative analysis using Atomic Absorption Spectrophotometer (AAS) revealed mercury concentration of < 0.002 mg/L. The said mercury concentration is below the permissible level set by the International Standard Maximum Permissible Level (MPL). The researcher recommends that every barangay promotes information and educational campaign on local residents on proper waste disposal to avoid further contamination of marine products.