The general theme of the call is “Sustainable Water Management”. 

Research & innovation proposals submitted under the Water4All 2026 Joint Transnational Call are required to address at least one of the following topics: 

• Topic 1: Integrated Monitoring and Assessment for Sustainable Water Management.
• Topic 2: Nature-Based Approaches for Resilient Water Management at hydrological and hydrogeological system scale.
• Topic 3: Smart, secure and adaptive water infrastructures.
• Topic 4: Resilient Water Systems Through Systemic Change, Policy Coherence and Inclusive governance.

The call topics are overlapping and non-exclusive. Thus, proposals must address at least one of the following topics and may integrate multiple topics where relevant.

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Each consortium must be composed of 

• at least three eligible partners that request funding from participating Funding Partner Organisations from three different countries.
• at least two independent legal entities from two different EU Member States or Horizon Europe associated countries (link here) as recipients of the financial support.
• A maximum of 7 partners (including one self-funded partner)

Each proposal must respect the general international and national/regional eligibility criteria.

The lists of eligibility and evaluation criteria are detailed in the Water4All Call Announcement document.  

This call includes an additional modality aiming at Early Career Researchers who have obtained their PhD less than 10 years prior to the call launch i.e. after 8 September 2016, unless the FPOs calculate any exemption (e.g. maternity leave) as specified in the national/regional regulation annex. The other PIs in the Consortium do not need to be early career researchers. The thematic focus of the ECR modality is aligned with the JTC topics.