Feasibility of a Scheduled Desludging Service (LLTT) in Padang City (Indonesia)

The Nanggalo faecal sludge treatment plant (FSTP) in Padang City has a high idle capacity mostly due to the insufficient amount of faecal sludge (FS) being sent to the plant. Analysing the existing of faecal sludge management (FSM) and feasibility of scheduled desludging service in Padang City using PESTEL analysis (political, economic, social, technology, environment, and Legal). Evaluation of the existing conditions was carried out by observation, interviews and questionnaires addressed to stakeholders and community. Data analysis used descriptive qualitative method along with SWOT analysis. The results of the analysis indicate that the lack of regulation in FSM results the low septic tank desludging rate. The FSTP institutions are still responsible for regulatory tasks under the Padang City Environmental Agency (DLH). The BOD, COD, TSS, and ammonia parameters from the FS treatment have not met the quality standards. The locally-generated revenue (PAD) from septic tank desludging retribution to the FSTP has not reached as many as 54% of the respondents have never emptied their septic tanks. The analysis of the environmental aspect showed that only 1% of respondents blamed toilet overflows on surface water levels. The SWOT analysis findings indicate that a change in strategy is required to enhance FSM in Padang City. The financial and economic feasibility analysis of LLTT program shows that the parameters net present value (NPV) > 0 and benefit cost ratio (B/C) > 1, so the LLTT is feasible to implement, but need to fulfil the missing aspects to make the LLTT run optimally.