2023 Water Quality Report is now available Published June 29, 2023 By Bioenvironmental Engineering Flight 51st Operational Medical Readiness Squadron OSAN AIR BASE, Republic of Korea -- The consumer confidence report (CCR) provides the 2022 drinking water quality information for Osan Air Base. The report is based on the data collected, assessed and documented by the 51st Operational Medical Readiness Squadron bioenvironmental engineering flight. It also contains information on how the 51st Civil Engineer Squadron operations and maintains the drinking water system. The report can be found HERE and is available in the Newcomer's and Resources pages.