The Department of Defense, through the Naval Research Laboratory (NRL), is seeking quotations for a comprehensive maintenance agreement for water treatment purification systems located in Washington, D.C. The procurement includes a total small business set-aside for facilities support services, specifically targeting a preventive maintenance agreement that encompasses monthly, quarterly, semi-annual, and annual service visits for various water purification components, with a total firm fixed price of $38,988.00 for a 12-month period. Interested vendors must provide brand name or equivalent items, ensure compliance with OEM warranty requirements, and submit their technical and price quotes via email to the designated contact, Elizabeth Harley, by the specified deadline. The estimated delivery time and additional service rates outside normal business hours are also to be included in the submission.