Kualiti air tasik dan kesesuaiannya terhadap aktiviti rekreasi berasaskan air di Tasik Embayu, Tanjong Malim, Perak (Lake water quality and its suitability for water-based recreation activities in Tasik Embayu, Tanjong Malim, Perak)
Abstract
Artikel ini bertujuan untuk mengenal pasti status kualiti air Tasik Embayu di Bandar Proton, Tanjong Malim Perak dan menilai kesesuaiannya terhadap aktiviti berasaskan air. Penilaian status kualiti air melibatkan pengukuran enam parameter utama iaitu DO, BOD, COD, SS, pH dan NH3N pada tujuh buah stesen pensampelan air yang telah ditetapkan. Kesemua parameter ini dibandingkan dengan Standard Kualiti Air Kebangsaan (NWQS) dan Indeks Kualiti Air (IKA) oleh Jabatan Alam Sekitar (JAS) Malaysia untuk menilai tahap dan status kualiti air Tasik Embayu. Pensampelan air dijalankan sebanyak tiga kali iaitu pada bulan Mac, April dan Mei 2018. Metod kajian ini adalah melalui tinjauan, pensampelan air tasik dan ujian di dalam makmal untuk mendapatkan status kualiti air tasik yang diperlukan. Hasil kajian mendapati bahawa nilai keseluruhan IKA Tasik Embayu sepanjan tempoh cerapan ialah 76.53%. Pada bulan Mac, nilai IKA yang direkodkan adalah 74.99%, diikuti bulan April (76.91%) dan Mei (77.69%) dan nilai ini menunjukkan kualiti air Tasik Embayu berada pada Kelas II. Sementara itu, parameter kualiti air yang menunjukkan berlakunya pencemaran air di Tasik Embayu adalah parameter SS (Kelas III) dan COD (Kelas IV). Parameter yang lain mencatatkan nilai di bawah standard yang membolehkan sebarang aktiviti rekreasi berasaskan air dijalankan di tasik ini. Pencemaran air Tasik Embayu adalah disebabkan dengan bahan-bahan pencemar daripada sisa domestik dan sisa restoran yang dialirkan secara langsung ke dalam tasik. Manakala aktiviti pembersihan ladang kelapa sawit yang dilakukan tidak jauh dari tasik serta pembukaan tanah untuk kawasan perumahan baru turut meningkatkan SS terutama pada waktu hujan. Walaupun hasil kajian menunjukkan kualiti air Tasik Embayu berada pada tahap sederhana tercemar, namun ia masih lagi sesuai untuk menjalankan aktiviti berasaskan air seperti berkayak, memancing serta beriadah di sekitar tasik berkenaan.
Kata kunci: aktiviti rekreasi, eutrofikasi, indeks kualiti air, pencemaran air, tasik
Abstract
This article aim to identify the water quality of Tasik Embayu, Proton City, Tanjong Malim, Perak and assessing its suitability for water-based recreation activities. The assessment on water quality was based on measuring six parameters i.e., DO, BOD, COD, SS, pH and NH3N at seven designated water sampling stations. All parameters were compared against the National Water Quality Standards (NWQS) and Water Quality Index (WQI) for Malaysia introduced by Department of Environment to identify the status and level of water quality in Tasik Embayu. Sampling was carried out twice a month during March, April and May 2018. The methodology was designed as surveying the sampling of water quality and laboratory testing to get the status of water quality in Tasik Embayu. The results showed that the value of Water Quality Index during the period of sampling at 76.53%. In March, the WQI value was at 74.99%, followed by April (76.91%) and May (77.69%) and the result showed that the water quality of Tasik Embayu was at Class II. Meanwhile, water quality parameters indicated a water pollution at Tasik Embayu with SS parameter (Class III) and COD (Class IV). Other parameters recorded reading below the standard to enable water-based recreation activities in Tasik Embayu. The source of water pollutants for Tasik Embayu were due to pollutants from domestic and restaurant wastes which directly flow into the lake. While the clearing activities in the oil palm plantations close to the lake and land opening for residential housing caused the significant increase in SS especially during rainy season. While the results of water quality in Tasik Embayu showed moderately polluted, the water-based recreation activities such as kayaking, fishing and recreation can still be performed.
Keywords: recreation activities, eutrophication, water quality index, water pollution, lake.
Keywords
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