Analisis Kualitas Air Sungai Batanghari Zona Tengah Wilayah Tebo Dengan Metode Indeks Pencemaran dan Water Quality Index
Batanghari River has a length of 775 km divided into three zones ie upstream, middle and downstream zones. One of its functions as raw water. Batanghari River Central zone of Tebo region has decreased water quality due to land use change. This study aims to determine the status of water quality from the Batanghari River zone in the middle of the Tebo region by the method of pollution index and water quality index. The method used from the Ministry of Environment No. 115/2003 on Appendix II on the Determination of Water Quality Status by the method of pollution index and Water Quality Index Method (WQI) and as the reference of the quality standard of Government Regulation Number 82 Year 2001 on the Management of Water Quality and Water Pollution class II . Monitoring and sampling were conducted three times in June, Sept and October of 2017 for 5 (five) sample locations namely Pucuk Jambi Village, Teluk Kayu Putih, Teluk Kepayang, Singkawang, Tambun Arang with parameters of pH, Temperature, Dissolved Oxygen, BOD, Turbidity, Total Phospor, Nitrite, TSS, E-coli, Fecal Coliform. Based on the results of the sample test in five locations and the analysis using the pollution index method obtained value of 6.72 and water quality index with a value of 50.72. The results showed that both methods were used and resulted in the status of Batanghari river water of moderately polluted category and this conclusion could be the reference of related parties in the Batanghari River water management in accordance with its function and allocation.