The WWTPs with low values of resiliency (near to the minimum value of the resiliency variation range as shown in Figure 4) are more important to be considered for allocation of financial resources. The cost of increasing economic-based sub-criteria for one unit of cost is shown in Table 6. The data in Table 5 are obtained from data sources such as the EPA (Environmental Protection Agency) and sites such as www.bls.gov, as well as engineering judgment and consultation with experts. The initial analysis of the results shows that at least a 30% increase in the actual values is required for improvement of resiliency. It should be noted that in estimating the effect of financial investment on the ‘Percent of not at risk equipment in each WWTP’, shown as factor Ro₄, in the absence of any related data it is assumed that 20% of at risk equipment falls into the electrical category that can be placed at a higher elevation, and its submergence capability enhanced. Based on this assumption, improvement in Ro₄ can be as much as 30%.