The U.S. Coast Guard Base Ketchikan requires annual inspection, testing, and certification of its potable water system backflow preventers. The contractor must provide all personnel, labor, materials, and equipment to perform the work at 1300 Stedman Street, Ketchikan, AK 99901. The contract includes a base period from July 1, 2026, through September 30, 2026, with four one-year option periods ending September 30, 2030. This procurement is a total small business set-aside under NAICS code 238220, with a size standard of $19.0 million. No budget amount is specified in the description.