Electronic Theses and Dissertation

Fluorida merupakan unsur yang melimpah di alam dan salah satu sumber utamanya adalah daerah manifestasi panas bumi. Di Desa Ie Seum, masyarakat menggunakan air tanah sebagai sumber air bersih dan air minum, sehingga berpotensi terpapar fluorida melalui konsumsi harian. Paparan fluorida dalam jangka panjang dapat menimbulkan efek kesehatan, namun hingga saat ini belum ada penelitian yang secara khusus mengevaluasi kualitas air tanah terkait kandungan fluorida di wilayah tersebut. Penelitian ini bertujuan untuk mengetahui sebaran konsentrasi fluorida dalam air tanah di Desa Ie Seum serta hubungan antara konsentrasi fluorida dengan ketinggian muka air tanah. Sampel air tanah diambil dari 15 titik di daerah pemukiman pada September 2022, dengan parameter yang diukur meliputi ketinggian muka air tanah, pH, dan konsentrasi fluorida. Metode interpolasi Inverse Distance Weighted (IDW) digunakan untuk memetakan sebaran konsentrasi fluorida, sementara korelasi antara konsentrasi fluorida dan ketinggian muka air tanah dianalisis menggunakan Pearson Correlation Coefficient dan Coefficient of Determination. Hasil menunjukkan konsentrasi fluorida bervariasi antara 0,100 hingga 0,693 mg/L dengan rata-rata 0,209 mg/L, masih di bawah ambang batas maksimum 1,5 mg/L menurut Peraturan Menteri Kesehatan No. 492 Tahun 2010. Tidak ditemukan korelasi signifikan antara konsentrasi fluorida dengan ketinggian muka air tanah maupun ketinggian permukaan tanah. Kesimpulannya, kadar fluorida di Desa Ie Seum masih dalam batas aman dan tidak dipengaruhi oleh variabel ketinggian muka air tanah maupun permukaan tanah.

Fluoride is an element that is abundant in nature and one of the main sources is geothermal manifestation areas. In Ie Seum Village, the community uses groundwater as a source of clean water and drinking water, potentially exposing them to fluoride through daily consumption. Long-term exposure to fluoride can cause health effects, but until now there has been no research that specifically evaluates groundwater quality related to fluoride content in the area. This study aims to determine the distribution of fluoride concentration in groundwater in Ie Seum Village and the relationship between fluoride concentration and groundwater level. Groundwater samples were taken from 15 points in the residential area in September 2022, with parameters measured including groundwater level, pH, and fluoride concentration. The Inverse Distance Weighted (IDW) interpolation method was used to map the distribution of fluoride concentration, while the correlation between fluoride concentration and groundwater level was analyzed using Pearson Correlation Coefficient and Coefficient of Determination. Results showed that fluoride concentrations varied between 0.100 to 0.693 mg/L with an average of 0.209 mg/L, still below the maximum threshold of 1.5 mg/L according to the Minister of Health Regulation No. 492 Year 2010. No significant correlation was found between fluoride concentrations and the height of the groundwater table or the height of the land surface. In conclusion, fluoride levels in Ie Seum Village are still within safe limits and are not influenced by groundwater level or ground surface height variables.