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All Journal Jurnal Ilmu Lingkungan
Galih Dwi Jayanto
Magister Program Perencanaan dan Manajemen Pesisir dan Daerah Aliran Sungai, Fakultas Geografi, Universitas Gadjah Mada
Environmental Science

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Water Quality Indices for Assessing Heavy Metal Pollution in Winongo River and Gajahwong River Yogyakarta-Indonesia Margaretha Widyastuti; Galih Dwi Jayanto; Muhammad Ridho Irshabdillah; Lintang Nur Fadlillah
Jurnal Ilmu Lingkungan Vol 22, No 1 (2024): January 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.1.100-108

Abstract

Abstract Winongo and Gajahwong Rivers traverse three regions: Sleman Regency, Yogyakarta City, and Bantul Regency. Both rivers' water quality was assessed using two water quality indices specified for detecting only the heavy metal presence, namely Heavy Metal Pollution Index (HPI) and Pollution Index (PI). Details on river water quality were a series of monitoring data from 2017 until 2020 that comprised eleven parameters: pH, BOD, COD, NH3N, TSS, Total Coli, oil and grease, Fe, Cu, Cd, Cr, and Pb. The results indicate that the heavy metal contents of Winongo and Gajahwong Rivers meet the class II water quality standard. Non-metal parameters, namely COD and TSS, are present in small amounts and below the upper thresholds. The HPI values of Winongo and Gajahwong Rivers were 3.15 and 2.29, respectively, or categorized as ‘excellent’. Similarly, based on the PI values (0.78 and 0.72, respectively), both rivers' water quality fell into the category of ‘good’.  
Co-Authors Lintang Nur Fadlillah Margaretha Widyastuti Muhammad Ridho Irshabdillah