BASIC COST OF DOMESTIC WASTEWATER MANAGEMENT SERVICES

I A R Widhiawati^[1]*, N M A Wiryasa² , D K Sudarsana³ , and K D Harmayani⁴

¹ Doctor of Engineering Study Program, Udayana University, Denpasar, 80361, Bali, Indonesia

^2,3,4 Department of Doctoral Program, Faculty of Engineering, Udayana University, Denpasar, 80361, Bali, Indonesia

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art17

ABSTRACT

Denpasar Sewerage Development Project (DSDP) is a domestic wastewater network development project that serves Denpasar City, Sanur Area, and Kuta Area. Built from soft loans from the Japanese Government, the State Budget, the Regional Revenue and Expenditure Budget for the Province of Bali, Denpasar City, and Badung Regency. The total cost is 11,404 million JPY and IDR 193.25 billion. There are  Waste Water Treatment Plant (WWTP) in Suwung, the main network, pump houses in Sanur and Kuta. The domestic wastewater management system is a basic service provided by the government, but requires community participation in retribution payments for service rendered for its operation and maintenance. The amount of the levy is determined in the service tariff based on the basic cost, waste water source, type of activity, and customer classification according to the volume of wastewater generated, so that the service tariff is different for each customer classification. The base cost is determined from the previous year’s actual costs and processing capacity. The average costs for 2017-2021 are IDR 14,465 billion. The capacity of the centralized wastewater treatment plant is 51,000 m³/day. The Basic Cost to recover operational and maintenance costs for the centralized domestic wastewater treatment service is IDR 5,103/m³.

Keywords: Wastewater, basic cost, management services

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