The TOWER project aims to create resilient buildings capable of self-sustaining water supply and disposal in urban areas facing climate stress. Objectives include advancing water treatment tech for wastewater and stormwater reuse, designing efficient water vapor capture materials, and providing implementation guidance. Embracing the "One Water" concept, it fosters a climate-aware workforce through educational outreach. Using advanced techniques like mass spectrometry, the team will investigate water quality and develop smart oxidation processes. Novel polymers will facilitate efficient water vapor harvesting. International collaboration will drive global progress in water sustainability and resilience.