Harahap, Syaiful Ramadhan2019-01-082019-01-082019-01-09978-979-792-865-0wahyu sari yenihttp://repository.unri.ac.id/handle/123456789/9524Parit River 13 is one of the rivers that crosses Tembilahan subdistrict with a relatively high population density. The function of these rivers is used as a rain water drainage that existence is not be separated from human activities around the watershed. Increasing population growth has caused the Parit River 13 to experience a decline in water quality caused by domestic waste inputs. This study aims to determine water quality and domestic waste pollution in the Parit River 13. This research carried out sampling at three locations that presented the upstream, middle and downstream of the river. Analysis of pollutant load is made by multiplying the value of river water discharge with the concentration of pollutant parameters. The results showed the highest domestic waste pollution load value was COD of 785.635 mg/sec, BOD 510.663 mg/sec, Phosphate (PO4) 27.643 mg/sec, and Nitrate (NO3) 1.455 mg/sec. Based on the value of concentration and pollutant load, Parit 13 River Tembilahan Subdistrict, Indragiri Hilir Regency is in a condition contaminated with domestic waste.endomestic wastewater qualitypollution loadArticle