Penentuan Status Mutu Air dengan Metode Indeks Pencemaran pada Sungai Aek Sibundong Kecamatan Dolok Sanggul, Kabupaten Humbang Hasundutan, Sumatera Utara

Abstract

Providing clean water is now a special concern for developed and developing countries, especially Indonesia, with problems providing clean water for the community such as the lack of availability of clean water sources and unequal service provision. The existence of the Aek Sibundong River, which flows through Dolok Sanggul District, Humbang Hasundutan Regency is greatly utilized by the surrounding community for irrigation of rice fields, agriculture, animal husbandry, and other purposes. This research aims to analyze water quality and determine the water quality status of the Aek Sibundong River in Dolok Sanggul District, Humbang Hasundutan Regency, North Sumatra. The method used is the Pollution Index (IP) method in accordance to Keputusan Menteri Lingkungan Hidup No. 115 Tahun 2003. The water quality parameters tested include physical parameters, among others, Total Suspended Solid (TSS), turbidity, and temperature, chemical parameters, viz., Total Dissolved Solid (TDS), pH, Phosfat (PO4), Ammonia (NH3), Free Chlorine (Cl2), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD), as well as biological parameters, namely Total Coliform. The results of this research show that several parameters at several points sampling have passed the established quality standards and the water quality status of the Aek Sibundong River at various points sampling varies from lightly to moderately polluted. Based on the data from this research, it is concluded that the water quality status of the Aek Sibundong River in 2024 is classified as lightly polluted. This data can be used as a basis for sustainable river water quality management policies.