Pagbanganan River that traverses Baybay City, Leyte, is one of the major rivers in Leyte. The river plays a significant role in catering the necessities for all types of organism’s dependent on it. This study was conducted in order to establish baseline data on the physicochemical characteristics of the water in Pagbanganan River through its pH, water temperature, dissolved oxygen (DO), biochemical oxygen demand (BOD), total suspended solids (TSS), total hardness (as CaCO3), total alkalinity, total dissolved solids (TDS), water conductivity, phosphates (as reactive phosphorous) and sulfates level and assess the quality of the water by comparing the values obtained with the standard limits set by DENR (2016) and US EPA (2005). Sampling was done on a one-month interval from August, 2016 to December, 2016 following standard method. Results revealed that the water in Pagbanganan River system had an averag

Keywords : DENR; Environmental Monitoring; Pagbanganan River; US EPA; Water Index.