American Water Operations and Maintenance LLC, Camden, New Jersey, has been awarded a $10,259,964 modification (P00152) to a 50-year contract (SP0600-09-C-8257), with no option periods for the ownership, operation, and maintenance of water and wastewater utility systems at Fort Belvoir, Virginia. This is a fixed‐price prospective redetermination contract. Locations of performance are Virginia and New Jersey, with a March 5, 2060, performance completion date. Using military service is Army. Type of appropriation is fiscal 2021 through 2060 Army operations and maintenance funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.