“…Nevertheless, and despite its key value in project evaluation, its use is rarely seen in methodologies related to wastewater reuse projects, leaving a research gap in this field of study (Declercq et al, 2020). The most common decision criteria used to assess cost-benefit analysis are NPV, BCR, IRR, DPP (Galvis et al, 2018;Omole et al, 2019;Freeman et al, 2019;Loarte-Flores et al, 2020;Pahunang et al, 2021;Sakcharoen et al, 2021;López-Serrano et al, 2021;Ghafourian et al, 2022). In the context of developing an LCCA this research is of great importance because a new factor related to the interest rate calculation has been introduced into the economic methodology.…”