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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
Fifi Gus Dwiyanti
Department of Landscape Architecture, Faculty of Agriculture, IPB University, IPB Dramaga Campus, Bogor, 16680, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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Assessment of Water Quality and Pollution Load Capacity in a Taluduyunu River, Gorontalo Province: The Impact of Artisanal Gold Mining Activities Sofian Rodiana; Alinda Fitriany Malik Zain; Fifi Gus Dwiyanti
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 16 No 4 (2026): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.16.4.511

Abstract

Artisanal small-scale gold mining (ASGM), locally known as PETI (Penambangan Emas Tanpa Izin), has substantially altered the upstream Taluduyunu River in Pohuwato Regency, Gorontalo Province, a reach supplying drinking water to roughly 19,686residents through PDAM Tirta Maleo. To quantify the scale of this degradation, water quality was assessed at four stations across the disturbance gradient during the 2023 dry season, covering 24 physicochemical parameters against Class II standards (PP 22/2021). Among all parameters measured, only total suspended solids (TSS) exceeded regulatory thresholds. At SR3, the most intensively mined station, TSS reached 21,000 mg/L, 420 times the 50 mg/L Class II limit, while BOD and COD remained below detection limits at all locations. The pollution index (PI) placed SR3 in the heavily polluted category (PI = 10.01) and SR2 and SR4 in the moderately polluted range. Actual TSS loads exceeded assimilative capacity (TMDL) by approximately 100-fold: BPA = 5,237,913.6 kg/day againstBPM = 52,272 kg/day, leaving a deficit of roughly 5.2 million kg/day and requiring a 99% load reduction for compliance. Multi-stakeholder analytic hierarchy process (AHP) analysis ranked TMDL determination (weight 0.341) and river classification (0.264) as themost urgent interventions, ahead of community outreach, monitoring, and law enforcement. The combined TMDL–AHP approach developed here may transfer to other ASGM-impacted watersheds, contributing to SDG 6 and SDG 15 objectives.
Co-Authors Alinda Fitriany Malik Zain Sofian Rodiana