Penentuan Harga Air Tanah untuk Irigasi Berkelanjutan di Kabupaten Jembrana

Abstract

Determination of Groundwater Prices for Sustainable Irrigation in JembranaRegency Subak Babakan Yehkuning is relatively new in obtaining Groundwater IrrigationNetwork, with the code YKN-127 in 2014. This study aims to determine the costcomponents and water prices that reflect the value of water use in a sustainablemanner. The method used in this research is quantitative calculation. The total waterdischarge from YKN-127 for three planting seasons in September 2015 until August2016 consecutively was 83,647.01 m3. This amount was derived from the total life ofthe pump for 2,733 hours, with a discharge 8.5 liters/second. The commoditiescultivated in three planting seasons were rice for two times and secondary crop (cornand soybean). Since the availability of ground water has a limited amount, it isimportant to note that the amount of water use should be less than the availabilities.The concept of sustainable value in the use of water is consisted of the total cost ofsupply, opportunity costs, and externalities costs. The results showed that the waterprice reflecting the sustainable water use value for irrigation at YKN-127 was Rp3,933.91/m3, which consisted of a full supply cost 65.9% (Rp 2,592.42/m3), anopportunity cost 27.9% (Rp 1,099.43/m3), and depletion premium 6.2% (Rp242.06/m3). This result is almost three times the operational and maintenance coststhat farmers usually pay for Rp 1,633.99/m3. This price describes the value that mustbe paid as an effort to maintain the development of irrigated agriculture sector andground water resources in order to remain sustainable in Jembrana, Bali Province.