- Aquatic Biodiversity
- Water, urban planning and sustainable development
- Integrated Water Resource Management (IWRM)
One year of "Environmental Protection" accreditation for OiEau

Following confirmation of OiEau's recognition as an association of public interest in September 2020, it was granted "Environmental Protection" approval by the French Ministry for the Environment on 22 June 2022 for a renewable period of 5 years.
Reserved for associations that demonstrate a real commitment to protecting the environment, particularly in the fields of nature protection and wildlife management, improving the quality of life, protecting water, air, soil, sites and landscapes, town planning, combating pollution and nuisance, this recognition enables our Association to participate in the work of public bodies concerned with the environment and to be appointed to sit on advisory committees or councils at national, regional or departmental level in France.
This distinction is a logical extension of OiEau's activities, as it has accompanied the broadening of the environmental challenges associated with water (drinking water production, wastewater treatment), to meet the needs of a changing world today and in the future: biodiversity, circular economy and adaptation to climate change.