Study of Water Quality Analysis in the Upper Cimanuk River, Sumedang Regency, West Java Province during the Dry Season

The Cimanuk River is the longest river in West Java after the Citarum River which passes through four districts namely Garut, Sumedang, Majalengka, and Indramayu districts. The headwaters of the Cimanuk River stretch from Garut to Sumedang Regency. The upper reaches of the Cimanuk river are crowded with various community activities that have the potential to cause a decrease in water quality. The decline in water quality that occurs will affect the existing resources in the upper reaches of the Cimanuk River. The purpose of this research is to gather information about water quality in the Upper Cimanuk River as seen from several measurement parameters. Water sampling was carried out during the dry season in September 2020. Water quality in the upper reaches of the Cimanuk River was obtained based on temperature parameters (27oC to 29oC), water brightness (30 cm to 36 cm), pH (6.54 to 6.67), DO (6.8 mgL-1 to 7.4 mgL-1), COD (11 mgL-1 to 13 mgL-1), TDS (206 mgL-1 to 244 mgL-1), TSS (19 mgL-1 to 26 mgL-1), ammonia (0.001 mgL-1 to 0.002 mgL-1), and nitrite (0.017 mgL-1 to 0.019 mgL-1) show that the water quality at each station in the upper reaches of the Cimanuk River is suitable for supporting the life of aquatic biota and fishing activities.