Brussels, 23 December 2025
On 1 January 2026, the ‘one substance – one assessment’ (OSOA) package will enter into force. This is a key deliverable of the Chemicals Strategy for Sustainability. It will make chemical assessments more consistent, transparent and efficient across EU legislation, covering products such as toys, food, pesticides and biocides. This new framework will also help identify risks earlier and allow faster action when needed. This is a significant step towards better and faster protection of people’s health and the environment.
The ‘one substance, one assessment’ package is composed of three legislative proposals: a regulation establishing a common data platform on chemicals; a regulation re-attributing technical tasks and improving cooperation among EU agencies; and a directive on the re-attribution of technical tasks to the European Chemicals Agency (ECHA).
At its core is a new common data platform on chemicals, due to be operational within the next three years. Accessible to everyone, this platform will act as a central hub, bringing together chemical data gathered under different EU laws. It will enable public authorities to re-use information on chemicals more easily, supporting better decision-making.
The new measures will bring stronger cooperation between EU chemicals agencies by clarifying the division of tasks, reducing duplication of work, and consolidating scientific and technical tasks. The OSOA package also introduces a monitoring and outlook framework to detect emerging chemical risks earlier. By systematically gathering data and using indicators and early-warning tools, the EU will be better equipped to identify new concerns and act swiftly when necessary.
Commissioner for Environment, Water Resilience and a Competitive Circular Economy, Jessika Roswall, said: “By streamlining the way chemicals are assessed, we can act earlier and more decisively to protect people’s health and the environment. This new framework will make it easier to access reliable data, strengthen our scientific cooperation, and improve the EU’s ability to anticipate and manage chemical risks.”
Source – EU Commission