Oktasari, ElisaItnawitaHanifah, T. Abu2016-10-192016-10-192016-10-19wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/8706Poly aluminium chloride and aluminium sulfat has been used as a coagulant to improve quality of water wells peat in Rimbo Panjang. The process of coagulation-floculation was performed using a jartest by measuring the turbidity with concentrations of 25, 50, 100, 150 and 200 ppm. Our finding showed that the coagulants could reduce turbidity by the increasing of concentrations. The optimum decreasing of turbidity was accured at 150 ppm (87,97% - 98,39%). Both coagulants were able to reduce turbidity as required by PERMENKES 416 / Menkes / PER / IV / 1990 “About Water Quality Requirementsencoagulationpeat waterpoly aluminium chloridealuminium sulphatestudent Paper Post Degree