ABSTRACT Peat water has a high content of organic matter and color, so it is not suitable for direct use for clean water without processing it first. Processing that can be done is the coagulation-flocculation method using natural coagulants. The natural coagulant used is made from corn seeds (Zea mays L.). This study aims to analyze the ability of coagulant corn seeds (Zea mays L.) in the…