<![CDATA[Penelitian daya tampung beban pencemar dilakukan pada daerah hulu-tengah dan hilir Sub-DAS Martapura selama periode pengamatan Oktober 2020 – Desember 2021. Hasil penelitian menunjukkan daya tampung beban pencemar Daya Tampung Beban Pencemar pada periode pengamatan Oktober 2020 diketahui bahwa pada parameter pH mempunyai nilai di atas baku mutu -0,8, pada daerah hulu lebih rendah dari baku mutu. Daya Tampung Beban Pencemar pada periode pengamatan April 2021 diketahui bahwa pada parameter PO4 sebesar -0,8, di bagian tengah dan -4,1 di bagian hilir berada di atas baku mutu. Daya Tampung Beban Pencemar pada periode pengamatan Bulan Desember 2021 diketahui bahwa pada parameter pH sebesar -0,6, DO sebesar -6,1 di daerah hulu berada di atas baku mutu, parameter PO4 sebesar -0,05, di bagian tengah berada di atas baku mutu dan parameter PO4 sebesar -0,03 di bagian hilir berada di atas baku mutu. Status mutu perairan dengan menggunakan metode STORET termasuk dalam kategori cemar sedang dengan total skor -20. Penurunan kualitas perairan di sepanjang Sub DAS Martapura disebabkan masukan bahan pencemar dari kegiatan antropogenik (akivitas masyarakat) di sepanjang bantaran sungai berupa Mandi, Cuci dan Kakus, dan kegiatan Keramba Jaring Apung (KJA) di bagian Hulu. The research on the carrying capacity of the pollutant load was carried out in the upstream-middle and downstream areas of the Martapura Sub-watershed during the observation period from October 2020 to December 2021. The results showed that the carrying capacity of the pollutant load was carried out in the observation period of October 2020, it is known that the pH parameter has a value above the quality standard of -0.8, in the upstream area it is lower than the quality standard. Pollutant Load Carrying Capacity in the observation period of April 2021, it is known that the PO4 parameter is -0.8, in the middle, and -4.1 in the downstream, which is above the quality standard. Pollutant Load Capacity in the observation period in December 2021, it is known that the pH parameter is -0.6, DO is -6.1 in the upstream area which is above the quality standard, the PO4 parameter is -0.05, in the middle it is above the quality standard and the PO4 parameter of -0.03 in the downstream are above the quality standard. The status of water quality using the STORET method is in the moderately polluted category with a total score of -20. The decline in water quality along the Martapura Sub-watershed is caused by the input of pollutants from anthropogenic activities (community activities) along the riverbanks in the form of bathing, washing, toileting, and floating net cages (KJA) activities in upstream.]]>
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