The Environmental Measurement Symposium 2025 (EMS), combining NEMC and the Forum on Environmental Accreditation, takes place August 4–7 at the Hyatt Regency St. Louis at the Arch in St. Louis, Missouri. With the theme “Building a Quality Culture as the Foundation for Reliable Data”, EMS features over 130 oral and poster presentations, an innovative new technology showcase, exhibits and workshops that bring together laboratory scientists, QA/QC managers, regulators and monitoring experts