Analisis Kebutuhan Air Bersih pada Gedung Baru Fakultas Teknik Universitas Muhammadiyah Mataram

Abstract

Abstract: Accurate planning of clean water demand is essential to ensure that water supply systems can effectively and efficiently meet users’ needs. This study aims to analyze the clean water demand of the New Building of the Faculty of Engineering, Universitas Muhammadiyah Mataram, and to evaluate the adequacy of the existing clean water supply system. The study employed a quantitative descriptive method with reference to the Indonesian National Standards (SNI) 03-7065-2005 and SNI 8153:2015 concerning plumbing systems. The analysis was conducted based on the number of occupants, the number of visitors, and the number and types of plumbing fixtures installed in the building. The data consisted of primary data, including the number of plumbing fixtures and water tank capacity, and secondary data, including the number of occupants, building floor plans, and clean water demand standards. Water demand calculations were performed to determine daily water demand, peak-hour demand, fixture-based water demand, and the adequacy of the available water supply capacity. The results showed that the clean water demand based on the number of occupants was 145.92 m³/day, while the demand based on the number of visitors was 14.58 m³/day, resulting in a total building water demand of 160.50 m³/day. Based on the analysis of the number and types of plumbing fixtures, the water demand was estimated at 189.45 m³/day, whereas the existing water supply system had a capacity of only 115.20 m³/day. The comparison indicates that the available clean water supply capacity is insufficient to meet the water demand of the New Building of the Faculty of Engineering, Universitas Muhammadiyah Mataram. Therefore, increasing the capacity of the water storage tanks and improving the water supply system are necessary to ensure optimal clean water services in accordance with the needs of building users.

Abstrak: Perencanaan kebutuhan air bersih yang tepat sangat diperlukan agar sistem penyediaan air mampu memenuhi kebutuhan pengguna secara efektif dan efisien. Penelitian ini bertujuan untuk menganalisis kebutuhan air bersih pada Gedung Baru Fakultas Teknik Universitas Muhammadiyah Mataram serta mengevaluasi kecukupan sistem penyediaan air bersih yang tersedia. Penelitian ini menggunakan metode deskriptif kuantitatif dengan mengacu pada Standar Nasional Indonesia (SNI) 03-7065-2005 dan SNI 8153:2015 mengenai sistem plambing. Analisis dilakukan berdasarkan jumlah penghuni, jumlah pengunjung, serta jumlah dan jenis alat plambing yang tersedia pada gedung. Data yang digunakan terdiri atas data primer berupa jumlah alat plambing dan kapasitas tandon air, serta data sekunder berupa jumlah penghuni, gambar denah gedung, dan standar kebutuhan air bersih. Perhitungan kebutuhan air dilakukan untuk memperoleh kebutuhan air harian, kebutuhan pada jam puncak, kebutuhan berdasarkan alat plambing, serta membandingkannya dengan kapasitas penyediaan air yang tersedia. Hasil penelitian menunjukkan bahwa kebutuhan air bersih berdasarkan jumlah penghuni sebesar 145,92 m³/hari, sedangkan kebutuhan air bersih berdasarkan jumlah pengunjung sebesar 14,58 m³/hari, sehingga total kebutuhan air bersih gedung mencapai 160,50 m³/hari. Berdasarkan analisis jumlah dan jenis alat plambing diperoleh kebutuhan air sebesar 189,45 m³/hari, sedangkan kapasitas penyediaan air dari sistem eksisting hanya sebesar 115,20 m³/hari. Hasil perbandingan menunjukkan bahwa kapasitas penyediaan air bersih yang tersedia belum mampu memenuhi kebutuhan air Gedung Baru Fakultas Teknik Universitas Muhammadiyah Mataram. Oleh karena itu, diperlukan peningkatan kapasitas tandon maupun sistem penyediaan air agar pelayanan air bersih dapat berlangsung secara optimal sesuai kebutuhan pengguna gedung.