Kajian Kerusakan Lingkungan Perairan Sungai Ngrowo Akibat Pencemaran Limbah Domestik Kabupaten Tulungagung

REZHA AGISTRIA, Prof. Totok Gunawan, M.S ; Dr. Slamet Suprayogi, M.S

2018 | Tesis | S2 Ilmu Lingkungan

Penelitian ini dilakukan di sepanjang Sungai Ngrowo yang berlokasi di Kabupaten Tulungagung Jawa Timur, bertujuan untuk mengkaji jenis, tingkat dan strategi pengelolaan lingkungan perairan Sungai Ngrowo yang ditimbulkan akibat aktivitas pencemaran limbah domestik di Kabupaten Tulungagung. Pendekatan yang digunakan dalam penelitian ini adalah pendekatan studi pada lokasi penelitian. Penggunaan pendekatan studi dalam lokasi penelitian ini karena kondisi perairan sungai tersebut merupakan lokasi padat pemukiman penduduk yang dihasilkan dari kegiatan rumah tangga lebih besar dibandingkan lokasi lainnya. Metode yang digunakan adalah survey dengan sampel diambil secara purposive sampling terhadap perairan sungai pada bagian hulu, tengah, dan hilir Sungai Ngrowo serta penentuan Indeks Pencemar dengan parameter TSS, COD, BOD, Amoniak, Fosfat, Minyak dan Lemak. Berdasarkan hasil analisis laboratorium terhadap kualitas air Sungai Ngrowo menunjukkan bahwa 5 sampel yang telah diukur terindikasi 3 sampel tercemar ringan, 1 sampel tercemar sedang, dan 1 sampel tercemar berat dimana sesuai dengan Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013 tentang Pedoman Standar Baku Kualitas Air Limbah Domestik dengan nilai TSS 30 mg/L; COD 100 mg/L; BOD 30 mg/L; Amoniak 10 mg/L; Minyak dan Lemak 5 mg/L, sehingga kualitas air di Sungai Ngrowo telah mengalami penurunan akibat aktivitas domestik disekitarnya yang padat.

This research was conducted in area along Ngrowo River located in Tulungagung regency of East Java. Its aims to analyze the type, level and strategy of environmental management of the polluted water in the Ngrowo River that caused by domestic waste pollution activity in Tulungagung regency. The approach that used in this research is a field study approach. The use of the field study approach, particulary in Ngrowo River, in this research because of the location of the river is in the densely populated residence that produce more household activity than the other location. The method that used in this research is survey with samples taken by purposive sampling towards the waterwayof the river in the upstream, middle, and downstream of Ngrowo River and the determination of Pollution Index with parameter of TSS, COD, BOD, Ammonia, Phosphate, Oil and Fat. Regarding to the laboratory analysis result towards the water quality of Ngrowo River shows that there are 3 mildly polluted samples, 1 medium polluted sample, and 1 heavy polluted sample in total of 5 that samples have been measured during the research process. It is in accordance with East Java Governor Regulation No. 72 of 2013 on Standard Guidelines for Wastewater Quality Standard Domestic with TSS value 30 mg / L; COD 100 mg / L; BOD 30 mg / L; Ammonia 10 mg / L; Oil and Fat 5 mg / L.In conclusion, the quality of the water in Ngrowo River has decreased due to the dense domestic activity in the location along with Ngrowo River.

Kata Kunci : environmental damage, domestic waste, pollution index, water quality.