Proyek konstruksi merupakan suatu kegiatan yang kompleks. Dalam pelaksanaannya, suatu proyek konstruksi memerlukan beberapa sumber daya yaitu seperti manusia, material, mesin, metode pelaksanaan, serta uang. Dimana kelima hal tersebut harus dipersiapkan dengan matang pada saat proses perencanaan sehingga saat dilaksanakan, proyek yang bersangkutan berjalan sesuai dengan tujuan yang diharapkan. Namun pada kenyataannya, sering kali terdapat permasalahan-permasalahan yang tak terduga yang mengharuskan terjadinya suatu penambahan dan pengurangan item maupun volume pekerjaan. Dimana hal tersebut biasa disebut dengan pekerjaan Variation order. Adanya pekerjaan Variation order secara tidak langsung akan mengakibatkan terjadinya perubahan biaya serta jadwal pelaksanaan proyek. Sehingga diperlukan suatu kesepakatan antara pemilik proyek dan kontraktor mengenai pengajuan perubahan biaya serta waktu pelaksanaan proyek untuk menghindari terjadinya perselisihan antara owner dan kontraktor dengan cara melakukan analisa jenis item pekerjaan, nilai, serta dampak dari pekerjaan Variation order yang terjadi. Dimana nantinya harus diajukan dalam bentuk dokumen pengajuan kompensasi biaya dan waktu pekerjaan Variation order yang disahkan melalui rapat khusus yang dihadiri Owner, Konsultan QS, MK, serta Kontraktor. Seperti halnya dengan yang terjadi pada Proyek Pembangunan Gedung Menara Mandiri Denpasar. Dimana proyek ini mengalami banyak perubahan terkait penambahan serta pengurangan item maupun volume pekerjaan yang berdampak langsung kepada terjadinya perubahan kontrak proyek yang bersangkutan. Dimana terjadi sebanyak 16 jenis pekerjaan Variaton Order dengan nilai yang didapat berdasarkan perhitungan dengan metode deskriptif kuantitatif sebesar Rp. 16.262.850. dengan nilai kontrak awalnya sebesar Rp. 75.700.000.000, sehingga berdampak pada terjadinya penambahan nilai kontrak menjadi Rp. 75.716.262.850 atau sama dengan penambahan 0,02% dari nilai kontrak awal.

The area of Jembrana Regency is 841.80 km2, has five sub-districts. The total population in 2021 is 281,289 people, covering the Melaya District 54,032 people, State District 85,349 people, Jembrana District 56,061 people, Mendoyo District 58,909 people, Pekutatan District 26,938 people. Gerokgak District is part of the western part of Bulelelng Regency. The population of Grokgak Subdistrict in 2021 is 86,421 people. The integration of clean water supply in the western part of Bali is very important, because the community is a collection of individuals who have socio-cultural, occupying different areas and environments, but have a common interest, for the fulfillment of water as a source of human life. Differences in interests in the use of water include, domestic and non-domestic interests, industry, irrigation and conservation. To find out the potential of Tukad Unda downstream in providing clean water, an analysis of its water The provision of clean water in the western part of Bali will be studied in this study, in line with efforts to improve clean water management in Jembrana Regency and Buleleng Regency. To determine the water balance in providing clean water, an analysis of water availability and water needs is carried out.

Based on data from the Tabanan Regency Central Bureau of Statistics in 2020 administratively the Tabanan Regency area is 839.33 km2, consisting of 133 villages and 816 official banjars, with a population of 448,000 people. Tabanan Regency is one of the regencies in Bali, where the topographical conditions of the existing villages are mostly in remote areas, so they often experience difficulties with clean water distribution problems. For the current condition, the provision of clean water in Tabanan Regency is provided by PDAM (Local Water Company) through the use of springs, ground water and river water, in addition to several areas the water supply is carried out through Pamsimas (Community-Based Drinking Water and Sanitation Provision). Currently Pamsimas Tabanan Regency is divided into 9 service coverage areas for people in rural areas. In general, the condition of drinking water services presents the main problem, namely that not all areas are accessed by adequate water services. This problem is mainly caused by various obstacles such as limited water resources, limited infrastructure and topographical conditions.

The area of Jembrana Regency is 841.80 km2, has five sub-districts. The total population in 2021 is 281,289 people, covering the Melaya District 54,032 people, State District 85,349 people, Jembrana District 56,061 people, Mendoyo District 58,909 people, Pekutatan District 26,938 people. Gerokgak District is part of the western part of Bulelelng Regency. The population of Grokgak Subdistrict in 2021 is 86,421 people. The integration of clean water supply in the western part of Bali is very important, because the community is a collection of individuals who have socio-cultural, occupying different areas and environments, but have a common interest, for the fulfillment of water as a source of human life. Differences in interests in the use of water include, domestic and non-domestic interests, industry, irrigation and conservation. To find out the potential of Tukad Unda downstream in providing clean water, an analysis of its water The provision of clean water in the western part of Bali will be studied in this study, in line with efforts to improve clean water management in Jembrana Regency and Buleleng Regency. To determine the water balance in providing clean water, an analysis of water availability and water needs is carried out.

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