determines to be appropriate. (4) Priority In awarding subgrants under this subsection, a private nonprofit organization shall give priority to any eligible individual who does not have access to a sanitary sewage disposal system. (5) Maximum amount The amount of a subgrant provided under this subsection shall not exceed $20,000. (d) Report Not later than 2 years after the date of enactment of this section, the Administrator shall submit to Congress a report describing the results of the program under this section with respect to the prevalence throughout the United States of low- and moderate-income households without access to a sanitary sewage disposal system. (e) Authorization of appropriations There are authorized to be appropriated to the Administrator such sums as are necessary to carry out this section. .