Not later than nine months after October 18, 1978, the Administrator shall promulgate guidelines establishing supplemental standards or treatment technique requirements for microbiological, viral, radiological, organic, and inorganic contaminants, which guidelines shall be conditions, as provided in paragraph (2), of any grant for a demonstration project for water reclamation, recycling, and reuse funded under section 300j–3a of this title or under section 300j–3(a)(2) of this title, where such project involves direct human consumption of treated wastewater. Such guidelines shall provide for sufficient control of each such contaminant, such that in the Administrator’s judgement, no adverse effects on the health of persons may reasonably be anticipated to occur, allowing an adequate margin of safety.