The Defense Health Agency intends to award a firm-fixed-price contract for a Portable Exchange Deionization (PEDI) water purification system, including all equipment, supplies, labor, and preventative maintenance, at Moncrief Army Health Clinic, Fort Jackson, SC. The contractor must deliver water meeting specified purity standards and respond to emergency on-site repair requests within 24 hours. The contract has a 12-month base period from 1 October 2026 through 30 September 2027, plus four 12-month option periods extending through 30 September 2031. This is a 100% total small business set-aside under NAICS 221310, and proposals are being requested through a combined synopsis/solicitation.