Evaluasi kualitas air di Situ Sigura-Gura, wilayah urban DKI Jakarta

Helmy Akbar; Yudi Setiawan; Liyantono Liyantono; Hefni Effendi; Bagus Amalrullah Utomo; Muhammad Isnan Zuhri; Riski Meidiza; Gilang Munggaran; Wiwid Arif Pambudi; Marfian Dwidima Putra; Setyo Pambudi Nugroho; Asep Kuswanto; Rahmawati Rahmawati; Yusiono Supalal; Erni Pelita Fitratunnisa; Mustika Pusparini; Yudith Sarunggu; Nofi Rahmawati; Arnold Arnold; Martha Solinda; Zaenal Abidin

Helmy Akbar Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680 https://orcid.org/0000-0003-0491-4718
Yudi Setiawan Forest Resource Conservation and Ecotourism Department, Faculty of Forestry and Environment, IPB University, Jl. Lingkar Akademik Kampus IPB Dramaga, Desa Baba-kan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Liyantono Liyantono Engineering and Bio-system Department, Faculty of Agricultural Engineering, IPB Uni-versity, Jl. Lingkar Akademik Kampus IPB Dramaga, Desa Babakan, Kec. Dramaga, Ka-bupaten Bogor, Jawa Barat 16680
Hefni Effendi Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Bagus Amalrullah Utomo Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Muhammad Isnan Zuhri Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Riski Meidiza Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Gilang Munggaran Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Wiwid Arif Pambudi Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Marfian Dwidima Putra Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Setyo Pambudi Nugroho Environmental Research Centre (PPLH) IPB University, Gedung PPLH IPB, Jl. Lingkar Akademik Kampus IPB Darmaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680
Asep Kuswanto Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Rahmawati Rahmawati Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Yusiono Supalal Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Erni Pelita Fitratunnisa Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Mustika Pusparini Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Yudith Sarunggu Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Nofi Rahmawati Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Arnold Arnold Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Martha Solinda Environmental Services Board (DLH), DKI Jakarta Provincial Government, Jl. Mandala V No.67 1, RT.1/RW.2, Cililitan, Kec. Kramat jati, Kota Jakarta Timur, DKI Jakarta 13640
Zaenal Abidin Chemistry Department, Faculty of Science, IPB University, Jl. Lingkar Akademik Kam-pus IPB Dramaga, Desa Babakan, Kec. Dramaga, Kabupaten Bogor, Jawa Barat 16680

Keywords: baku mutu, danau, degradasi lingkungan, indeks pencemaran, STORET

Abstract

Riset ini bertujuan untuk mengevaluasi kualitas air di Situ Sigura-Gura, Jakarta Selatan, DKI Jakarta, yang merupakan badan air buatan dengan peran strategis dalam penyediaan air dan pengendalian ekosistem lokal di wilayah perkotaan. Latar belakang penelitian ini didasari oleh meningkatnya tekanan pencemaran akibat urbanisasi, limbah domestik, dan aktivitas industri yang berpotensi mengganggu fungsi ekosistem dan kesehatan masyarakat. Pengambilan sampel dilakukan pada dua periode berbeda (musim kemarau dan hujan) pada tahun 2021 dengan pengukuran 39 parameter fisika, kimia, dan mikrobiologi melalui metode in situ dan ex situ. Analisis kualitas air dilakukan dengan merujuk pada standar baku mutu air kelas 2 dan menggunakan pendekatan metode STORET serta perhitungan Indeks Pencemar (IP). Hasil pengukuran menunjukkan adanya penurunan kualitas air secara signifikan dari titik inlet menuju outlet. Parameter seperti Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), dan Chemical Oxygen Demand (COD) meningkat melebihi ambang batas, sedangkan kadar Oksigen Terlarut (DO) menurun pada titik outlet. Analisis tambahan melalui perbandingan rasio Ci/Lij mengindikasikan bahwa beberapa parameter, antara lain TSS, BOD, COD, klorin bebas, hidrogen sulfida, dan bakteri coli, menunjukkan nilai pencemaran yang melebihi ambang batas, sehingga status mutu air di inlet dikategorikan sebagai "Cemar Ringan" sedangkan di outlet sebagai "Cemar Berat". Rasio BOD/COD yang rendah mengindikasikan dominasi bahan organik non-biodegradable dalam sistem perairan. Hasil ini sejalan dengan penelitian lain yang mengaitkan peningkatan beban pencemar dengan dampak negatif aktivitas manusia terhadap badan air buatan. Oleh karena itu, peningkatan infrastruktur pengolahan limbah, pengendalian erosi, dan monitoring kualitas air secara berkala merupakan langkah strategis untuk pemulihan dan pengelolaan sumber daya air yang berkelanjutan di masa mendatang.

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