CONCEPTUAL MODEL TO MEASURE THE SUSTAINABILITY OF DOMESTIC RAW WATER SUPPLY FROM MIXED SOURCES

The domestic water mix is basically the use of renewable sources of raw water such as rain water and recycled gray water to be mixed with existing raw water sources, such as surface water, springs, and ground water, which are in critical condition. To find out the level of sustainability of raw water supply for drinking water using the Domestic Water Mix approach it is necessary to formulate a conceptual model to measure it. The main objective of the research is to formulate a conceptual model to measure the sustainability of raw water supply using the Domestic Water Mix approach. This research is exploratory in nature, more in the form of literature review relating to drinking water raw water, governance, and the process of its utilization and supporters. The result of this study shows that the conceptual model to measure the sustainability of water supply raw water using the Domestic Water Mix approach consists of 5 stages of measurement, namely: (1) problem identification; (2) assign key attributes; (3) WTP analysis; (4) formulating a model with a systems approach; and (5) mechanism of institutional cooperation. The method used in each stage is adjusted to the objectives of each stage, namely: (1) Multidimensional Scaling (MDS) & Monte Carlo; (2) Analytic Network Process (ANP); (3) Willingness To Pay (WTP); (4) Dynamic System; (5) Interpretative Structural Modeling (IMP).