Status Mutu Air Sungai Unda Pada Lahan Eks Galian C Kabupaten Klungkung
| Main Authors: | Wijana, I Made Sara, As-syakur, Abd. Rahman, Mahendra, Made MS, Dewi, I GA Kunti Sri Panca |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Environmental Research Center (PPLH) of Udayana University
, 2020
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| Online Access: |
https://ojs.unud.ac.id/index.php/blje/article/view/74092 https://ojs.unud.ac.id/index.php/blje/article/view/74092/39808 |
Daftar Isi:
- The Unda River (Tukad) is the second largest river in Bali Province after the Ayung River. The Unda River has been used for various activities, such as tourism activities for white water rafting and agricultural irrigation activities. In addition, Unda River water is planned to be used as a raw water source in the planned construction of the Bali Cultural Center (PKB) which is planned to be built in the lower reaches of the Unda River. Therefore, it is necessary to conduct research related to the water quality of the Unda River, especially in the Lower Unda River. Water quality analysis refers to class II water quality standards according to the Bali Governor Regulation Number 16 of 2016. Meanwhile, the analysis of water quality status uses the pollution index (IP) according to the Decree of the Minister of the Environment Number 115 of 2003. The results of the analysis show that water quality parameters that exceed the highest quality standard is downstream (sampling point 3) with 4 (four) parameters, namely Total Dissolved Solid (TDS), chemical oxygen demand (COD), total coliform and fecal coli. While the sampling points 1 (one) and 2 (two), the parameters that exceed the quality standard are total coliform and fecal coli. In addition, the results of this study also show that the pollution index value downstream is increasing, where at sampling point 1 which is a DAM location has a pollutant index of 3.78 (light pollution) and at sampling point 2 of 6.27 (moderate pollution) and at sampling point 3 of 7.67 (medium polluted).
- Sungai (Tukad) Unda merupakan sungai terbesar ke-dua di Provinsi Bali setelah Sungai Ayung. Sungai Unda selama ini telah digunakan untuk berbagai aktifitas, seperti aktifitas pariwisata untuk arung jeram serta aktivitas pengairan pertanian. Selain itu, Air Sungai Unda rencananya akan digunakan sebagai sumber air baku pada rencana pembangunan Pusat Kebudayaan Bali (PKB) yang rencananya akan di bangun di bagian hilir Sungai Unda. Oleh karena itu perlu dilakukan penelitian terkait dengan kualitas air sungai Unda Bagian Hilir. Analisis kualitas air mengacu baku mutu air kelas II menurut Peraturan Gubernur Bali Nomor 16 Tahun 2016. Sementara itu, analisis status mutu air menggunakan indeks pencemaran (IP) menurut Keputusan Menteri Lingkungan Hidup Nomor 115 Tahun 2003. Hasil analisis menunjukkan bahwa parameter kualitas air yang melebihi baku mutu paling banyak pada bagian hilir (titik sampling 3) dengan 4 (empat) parameter yaitu Total Dissolved Solid (TDS), kebutuhan oksigen kimia (COD), total coliform dan fecal coli. Sedangkan bagian titik sampling 1 (satu) dan 2 (dua), parameter yang melebihi baku mutu adalah total coliform dan fecal coli. Selain itu hasil penelitian ini juga menunjukkan bahwa nilai indeks pencemaran ke arah hilir semakin meningkat, dimana di titik sampling 1 yang merupakan wilayah DAM memiliki indeks pencemar 3,78 (Cemar ringan) dan di titik sampling 2 sebesar 6,27 (Cemar sedang) serta di titik sampling 3 sebesar 7,67 (Cemar sedang).