Cost Analysis of Water Quality Assessment Using Multi-Criteria Decision-Making Approach

In modern competitive markets, cost and quality parameters are the two main factors. So, it is essential to study their relationship, especially in leading industries such as urban public service companies. Consequently, manufacturers always try to reduce production costs and improve product quality and services to consumer expectations. Also, the concerns of the new century in the field of fresh water and the reduction of its resources related to global warming have increased the costs of quality and supply of freshwater. Therefore, in this research, in order to estimate the quality costs in the field of water resources and wastewater management and identify the option that creates the most cost, in the first step, the "Prevention, Assessment, and Failure (PAF)" model was used to select cost-imposing options in organizational quality analysis. After determining the main options, appropriate criteria and sub-criteria were selected under the main study area (water and wastewater resources management). In the next step, a "Multiple-Criteria Decision-Making (MCDM) " method based on the "Fuzzy Analytical Hierarchy Process (FAHP)" and "Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS)" method was used to identify the option that creates the most cost. The results show that The highest cost of quality in the water and wastewater industry and its management are related to "Assessment Costs" and account for 36.55% of total costs. Also, The lowest cost of quality in the water and wastewater industry is related to "Preventive Costs" and accounts for only 12.18% of the total cost. In addition, the expert's opinion shows that the effect of increasing credit with 34.01% has the greatest weight, and this criterion is the most essential in water and wastewater resources management.