ABSTRACT Utilization of seeds from plants as natural coagulants has been widely used. This is done as an effort to reduce the use of synthetic coagulants that have a negative impact on their use. Papaya seeds can be used as a natural coagulant because they have a protein content of 21.51% and carbohydrates of 3.43%. This study aims to determine the effect of pH, coagulant dose and slow sti…