There is a high demand of water in hospitals and wastewater can pose danger. However, water should be provided without interruption. In other words, water should be professionally managed in hospitals. Survey methodology was used to collect data for this study in which the knowledge and opinions of the managers of 23 private and public hospitals in Trabzon province of Turkey on water management were analysed. It was found out that the managers do not know either the daily water requirement of water in hospitals or the exact number of the items and places related to water consumption such as faucets, toilets, urinals and shower stalls; many of the documents that show in-building water supply networks are not available; there are not any technical staff for water-related problems in 8 hospitals; there have been water cuts in 13 hospitals in the last year and problems in providing water in the time of water cuts. It turned out that the hospital managers in Trabzon should be informed about water management and awareness should be raised in this regard. Moreover, water management issue should be tackled in green hospital context and relevant statutory obligations should be imposed.