The study analyses the organisational and decision-making preparedness of outpatient healthcare facilities in the Czech Republic for disruptions to the drinking water supply. A cross-sectional empirical investigation combining quantitative questionnaire data with a qualitative analysis of open-ended responses was conducted. The findings indicate a predominantly low to moderate level of preparedness, a lack of formalised procedures, limited operational continuity, and a strong reliance on improvisation and external actors. The preparedness of facilities is determined primarily by organisational and decision-making capacity rather than by technical self-sufficiency. The study establishes a basis for the development of decision-support tools and emphasises the importance of organisational resilience in managing infrastructure disruptions. It also contributes to a deeper understanding of the relationship between technological dependency and the governance of healthcare systems.