Japan Water Cost: Tap, Bottled, or Server?

Field notes

The inputs distinguish ordinary drinking water from water used for tea and coffee, and let visitors identify whether they buy bottled water, drink tap water, or are considering a server. Household size runs from one to six people, while daily use is grouped into roughly 0.75, 1.25, and 2 litres per person. The site says its estimates vary by region, retailer, and provider, so the comparison is a guide rather than a quote.