The Europa website on environmental policy provides an overview of policy developments over time, with links to legal texts and relevant sites in other EU institutions.
https://europa.eu/european-union/topics/environment_en
The European Commission’s Environment webpages contain an overview of the detail of EU environmental policy. It also contains up-to-date information on recent policy developments.
https://ec.europa.eu/environment/index_en.htm
The website of the European Commission DG for Environment is accessible at: https://ec.europa.eu/dgs/environment/index_en.htm
The Environment Council configuration section on the European Council website contains links to press releases, documents, and meeting schedules:
https://www.consilium.europa.eu/en/council-eu/configurations/env/
The website of the European Environment Agency is available at the following link: http://www.eea.europa.eu/
The European Green Deal has a dedicated website:
https://ec.europa.eu/info/strategy/priorities-2019-2024/european-green-deal_en