ABSTRACT Peat water generally has an acidic pH, brownish-red color, and high turbidity. To improve the quality of peat water, coagulation-flocculation processing can be carried out. The types of coagulants used are lime, alum, and ferric chloride. This study aims to determine the effect of a mixture of lime, alum, and ferric chloride at different doses on improving the quality of peat wate…