Okumura Corporation (Head Office: Abeno-ku, Osaka; President: Takanori Okumura) is pleased to announce that its proposed water treatment technology has been selected as a target technology for the Ministry of the Environment's "Demonstration Project for Countermeasure Technologies to Reduce Concentrations of PFOS, etc.," for the second consecutive year, following its selection last fiscal year. Through our involvement in this project, we aim to further advance countermeasure technologies effective in reducing PFOS concentrations and contribute to environmental conservation and the improvement of living environments. [Background] PFOS and PFOA (hereinafter referred to as "PFOS, etc.") are types of PFAS, which are organofluorine compounds, and are substances of particular concern regarding their impact on human health. Due to their excellent water and oil repellency, they have been widely used in applications such as semiconductor manufacturing and foam fire extinguishing agents. On the other hand, their persistence in the natural environment and long-term retention in the human body and environment have raised international concerns about their harmfulness. PFOS, etc., are subject to elimination and other measures under the "Stockholm Convention on Persistent Organic Pollutants" (POPs Convention). In Japan, their manufacture and import are generally prohibited, and guideline values for public water bodies and groundwater, as well as water quality standards for tap water, have been established. The Ministry of the Environment continuously conducts demonstration projects for target technologies with the aim of enhancing knowledge of effective countermeasure technologies for reducing PFOS concentrations. Our proposed water treatment technology has now been selected for the demonstration project for the second consecutive year. (※) ※Ministry of the Environment Press Release, May 15, 2026: https://www.env.go.jp/press/press_04503.html [Overview of Demonstration Test] Follo