BACKGROUND:
Water insecurity affects over 2.2 billion people globally, with psychosocial dimensions—including mental health impacts, gender-based violence, and livelihood disruption—remaining critically underexamined in intervention frameworks. Despite documented associations between water scarcity and depression, anxiety, and stress, particularly among women, social work's contribution to water security interventions is poorly characterized. This gap is significant given that achieving Sustainable Development Goal 6 (SDG 6) requires core social work competencies: addressing inequitable access, supporting vulnerable populations, and advocating for policy change. METHODS Following Joanna Briggs Institute methodology and PRISMA-ScR guidelines, we will systematically search seven databases (MEDLINE, PsycINFO, Social Work Abstracts, CINAHL, Scopus, Web of Science, GreenFILE) from 2000 to present, supplemented by targeted grey literature searches. Two independent reviewers will screen studies using Population-Concept-Context criteria. Data extraction will employ standardized forms, with analysis using descriptive numerical summaries and qualitative thematic synthesis. Protocol registered: Open Science Framework (DOI: 10.17605/OSF.IO/GKSFZ).

RESULTS:
This scoping review will provide the first systematic mapping of social work interventions addressing water insecurity globally. We will examine the nature, extent, characteristics, implementation contexts, and outcomes of these interventions across diverse settings, with particular attention to water-stressed regions and vulnerable populations.

CONCLUSIONS:
Findings will inform evidence-based practice guidelines, curriculum development, and policy integration, strengthening social practice contributions to SDG 6 targets on universal water access, climate adaptation, and environmental justice. Results will be particularly relevant to practitioners and policymakers in water-stressed regions globally.