Analisis Kebutuhan Air Domestik dan Pertanian Rakyat di Gampong Kajhu Kecamatan Baitussalam Kabupaten Aceh Besar Analysis of Domestic and Smallholder Farm Water Demand in Kajhu Village, Baitussalam Sub-district, Aceh Besar District. Andi Hidayat1, Dewi Sri Jayanti1, Ichwana1* 1Program Studi Teknik Pertanian, Fakultas Pertanian, Universitas Syiah Kuala Abstrak. Penelitian ini untuk menganalisis kebutuhan air domestik dan pertanian rakyat di gampong Kajhu Kecamatan Baitussalam Kabupaten Aceh Besar. Parameter yang diamati pada kebutuhan air domestik yaitu debit, kecepatan, tekanan, kehilangan tekanan dan kebutuhan air sedangkan pada pertanian rakyat, parameter yang diamati yaitu debit rata-rata harian pada saluran irigasi. Data jaringan perpipaan diperoleh dari PDAM Tirta Mountala. Data yang diperoleh yaitu data debit air yang disuplai, kebutuhan air, kecepatan aliran, diameter pipa, panjang pipa, jenis pipa dan elevasi junction. Analisis jaringan pipa dilakukan menggunakan software EPANET 2.0. Hasil analisis diinterpretasikan dalam bentuk peta jaringan pipa. Peta tersebut menunjukkan debit yang diterima jaringan pipa, tekanan, kecepatan dan kehilangan tekanan jaringan pipa pada saat analisis.Hasil penelitian menunjukkan bahwa kebutuhan air pertanian rakyat sudah mencukupi. Debit yang dibutuhkan sebesar 658 m3/hari sedangkan rata-rata debit yang melalui saluran tersebut sebesar 135.648 m3/hari. Kebutuhan air domestik sebesar 0,499 l/detik sedangkan debit rata-rata hasil simulasi sebesar 0,422 l/detik. Distribusi air bersih pada lokasi penelitan masih belum berfungsi maksimal disebabkan masih terdapat beberapa kriteria jaringan perpipaan yang belum terpenuhi diantaranya debit yang di salurkan belum mencukupi, terdapat pipa dengan kecepatan kurang dari 0,6 m/s, node dengan tekanan kurang dari 25 m air panjang dan diameter pipa yang tidak sesuai standar dan distribusi yang kurang merata. Kata kunci : kebutuhan air domestik, pertanian rakyat, EPANET 2.0, perpipaan, distribusi air. Abstract. This research was to analyze the domestic and smallholder farm water demand in Gampong Kajhu Baitussalam Sub-district, Aceh Besar District. The parameters observed in domestic water demand were discharge, speed, pressure, pressure loss and water demand while on the smallholder agriculture, the parameters observed were daily average discharge on irrigation channel. Pipeline network information obtained from PDAM Tirta Mountala. The data obtained are water supply, water demand, flow, velocity, pipe diameter, pipe length, pipe type and pipe elevation. Pipeline network analysis used EPANET 2.0 software. The results of the EPANET 2.0 analysis were interpreted in the form of pipeline network maps. The maps shows the water flow received by pipelines, pressure, pressure loss and velocity. Based on research, water needs for smallholder farm has been sufficient. Water required for smallholder farm is 658 m3 a day while average debit through irrigation channel is 135.648 m3 a day. Domestic water requirement of 0,499 l per sec while the average discharge based on the simulation result is 0,422 l per sec. Water Distribution to the research location is still not functioning optimally because there are several criteria of pipeline network that has not been fulfilled such as the water debit in the channel is not sufficient, there is a pipe with speed less than 0.6 m / s, node with pressure less than 25 mH2O, pipe length, pipe diameters and the distribution is still uneven. Keywords : domestic water demand, smallholder farm, EPANET 2.0, pipeline, water distribution.