Overcoming water, sanitation, and hygiene challenges in critical regions of the global community

• Analysis of the global water and sanitation crisis. • WASH services between industrialized and non-industrialized regions. • Explores the SDG 6 Framework, which aims to provide and sustain water facilities. • Sustainability of financial models in WASH provision. • Scalability of successful models, and the potential role of technology. This review provides a critical analysis of the global water and sanitation crisis, as well as how community-based approaches have led to innovative water management solutions. Regions of sub-Saharan Africa, south Asia, the Middle East, and island countries have been taken as models to understand mitigating crises related to water, sanitation, and hygiene (WASH) services. Selected WASH cases were based on specific inclusion and exclusion criteria that highlighted finance, sustainability, and community engagement. The review analyses methods through which communities below the poverty line, living in densely populated areas, war zones, and island countries can foster innovation, and collaborations.