This is a Sources Sought notice to gauge industry interest for Reverse Osmosis System Modification Services at the Minneapolis VA Health Care System; no solicitation is currently available. The applicable NAICS code is 238220 with a $19 million size standard, and small business subcontracting limitations apply (no more than 75% of contract performance may be subcontracted to non-similarly situated entities). Interested firms must demonstrate their capability and experience in meeting the specialized requirements described in the Statement of Work. Performance would occur at the Minneapolis VA Health Care System, though no budget or performance timeline is specified.