; (D) dams, diversions, or other types of hydrologic modifications that make it not feasible to restore the water body to its original condition or to operate such modification in a way that would comply with the requirements of this Act; and (E) physical conditions related to the natural features of the water body, such as the lack of a proper substrate, cover, flow, depth, pools, riffles, and the like, unrelated to water quality, that may preclude compliance with the requirements of this Act. (7) Economic affordability criteria (A) In general In making a determination of economic affordability under this subsection, the Administrator (or the authorized State, in the case of a permit program approved under subsection (b)) shall consider preexisting and potential future costs, including of debt service, to the municipality for implementing effluent limitations and other control measures necessary to comply with the requirements of this Act would result in substantial and widespread economic and social impact in the service area of the municipality. (B) Basis for determining impacts In determining whether the economic and social impacts of preexisting and potential future costs under subparagraph (A) are substantial and widespread, the Administrator (or the State) shall consider the financial condition both of the municipality and of persons in the service area of the municipality, taking into consideration factors including— (i) socioeconomic indicators, including income and unemployment data for the service area of the municipality; (ii) population trends in the service area of the municipality; (iii) impacts on low-income households in the service area, including the ability of such households to pay basic shelter costs; (iv) whether there is a local industry that is failing or relocating out of the service area of the municipality, or if a local industry might fail or relocate if higher taxes or fees are imposed on it