Tap water in Japan hotels is generally safe to drink as it meets strict quality standards set by the Japanese government. Water sources in Japan hotels come from groundwater, surface water, and tap water, with tap water usually being filtered before consumption. Although bottled water is widely available, drinking tap water has several benefits such as affordability, accessibility, and reducing plastic waste. Travelers should take necessary precautions when consuming tap water due to changes in diet or sensitivity to new environments. Other alternative drinking options are available in Japan hotels such as green tea, black tea, coffee, and fruit juices. Hotels have also implemented various measures to conserve water as part of their efforts towards environmental sustainability. Cultural practices regarding drinking water include pouring drinks for others before oneself and holding the cup with both hands when receiving a drink from someone else as a sign of respect for others and an essential part of Japanese hospitality.