Challenges / InterChallenges Call for Proposals

As part of its mission to structure and foster water research, OneWater – Eau Bien Commun is launching its third Challenges / InterChallenges call for proposals.

This call aims to mobilize the scientific community around ambitious, original and interdisciplinary research projects capable of addressing current and future water-related challenges in France.

It is fully aligned with the dynamic of the OneWater – Eau Bien Commun programme, promoting cross-disciplinary, systemic and integrated approaches to water research.

Projects supported under this call are expected to:

  • Contribute to a better understanding of water-related issues in their environmental, social, economic and political dimensions
  • Foster interactions between scientific disciplines
  • Develop innovative and interdisciplinary approaches
  • Provide scientific responses to contemporary and emerging water challenges

Projects may be aligned with one or several scientific challenges addressed by the OneWater – Eau Bien Commun programme.

Eligible projects and consortia

This call is open to scientific consortia composed of:

  • At least three French higher education and/or research institutions, or national research organizations
  • Partners coming from at least two distinct academic sites

Information webinars

Two information webinars will be organized:

🔹 Call presentation webinar

20 January 2026 – 9:00 AM (Paris time)
👉 [REPLAY] Webinaire de présentation du 3ᵉ appel à projets OneWater – Eau Bien Commun | OneWater - Eau Bien Commun

🔹 Q&A webinar

12 February 2026 – 9:00 AM (Paris time)
📍 Online
👉 Q&A webinar – 3rd OneWater – Eau Bien Commun call for proposals
👉 Webinaire questions-réponses – 3ᵉ appel à projets OneWater – Eau Bien Commun | OneWater - Eau Bien Commun

These sessions will provide an opportunity to:

  • Present the scientific expectations of the call
  • Clarify the application process
  • Answer questions from project leaders and applicants

Practical information

The submission of letters of intent is open on the dedicated platform until the submission deadline, set for:

17 March at 11:00 AM (Paris time)
👉 Submit a letter of intent : Letter of intent - Call of Proposals

All information related to the 3rd OneWater – Eau Bien Commun call for proposals, including submission guidelines and reference documents, is available on the website of the French National Research Agency (ANR).