(2)
A grant referred to in paragraph (1) for a project which involves direct human consumption of treated wastewater may be awarded on or after the date of promulgation of guidelines under this section only if the applicant demonstrates to the satisfaction of the Administrator that the project—
(A)
will comply with all national primary drinking water regulations under section
300g–1 of this title;
(B)
will comply with all guidelines under this section; and
(C)
will in other respects provide safe drinking water.
Any such grant awarded before the date of promulgation of such guidelines shall be conditioned on the applicant’s agreement to comply to the maximum feasible extent with such guidelines as expeditiously as practicable following the date of promulgation thereof.