This is a notice of the government's intent to award a sole-source, firm-fixed-price purchase order to Fresenius USA Inc. for a specific reverse osmosis water treatment system and accessories. The requirement is based on the determination that only Fresenius can provide the Aqua-C 15 Amp system, which is the only one compatible with the government's existing Fresenius hemodialysis equipment. Interested parties who believe they can meet the requirements may submit a capability statement for government review. The government may amend the solicitation for competition if such a determination is in its best interest. This notice serves as the formal solicitation for the intended source.