This is a Request for Information (RFI) for market research only, not a solicitation for a contract award. The 374th Contracting Squadron at Yokota Air Force Base, Japan, seeks sources for Initial Drinking Water Compliance Monitoring Services for Municipal Water at SFHA and SGD Japan, with all work performed in Japan. The government is gathering industry feedback to shape its acquisition strategy and identify capable vendors. Interested parties must hold specific Japanese permits under the Water Supply Act or the Act on Maintenance of Sanitation in Buildings, and their laboratories must meet certification or accreditation standards for drinking water analysis. No budget or submission timeline is specified in this description.