This article looks at the availability and cost of water in Japan. It examines the country's water supply system, the cost of tap water, whether it is safe to drink, other sources of drinking water, whether bottled water is expensive, and if there are any free sources of drinking water. Tap water is generally very affordable and considered safe to drink due to strict regulations. Bottled mineral waters can range from ¥100 (US$0.90) for 1 liter up to ¥400 (US$3) per liter, while spring waters can range between ¥300-¥500 (US$3-5). There are some free sources such as natural springs which can be found throughout the country but caution should always be taken when consuming directly from these sources.