In 2021, the total volume of purified water in Japan amounted to close to ** billion cubic meters of water. Rapid sand filtration represented the main method of purifying water. This method is often used in municipal drinking water facilities to purify water and is part of a multiple-stage treatment system.
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JWWA. (June 17, 2024). Amount of purified water in Japan from 2000 to 2021 (in billion cubic meters) [Graph]. In Statista. Retrieved July 16, 2025, from https://www.statista.com/statistics/1218597/japan-purified-water-volume/
JWWA. "Amount of purified water in Japan from 2000 to 2021 (in billion cubic meters)." Chart. June 17, 2024. Statista. Accessed July 16, 2025. https://www.statista.com/statistics/1218597/japan-purified-water-volume/
JWWA. (2024). Amount of purified water in Japan from 2000 to 2021 (in billion cubic meters). Statista. Statista Inc.. Accessed: July 16, 2025. https://www.statista.com/statistics/1218597/japan-purified-water-volume/
JWWA. "Amount of Purified Water in Japan from 2000 to 2021 (in Billion Cubic Meters)." Statista, Statista Inc., 17 Jun 2024, https://www.statista.com/statistics/1218597/japan-purified-water-volume/
JWWA, Amount of purified water in Japan from 2000 to 2021 (in billion cubic meters) Statista, https://www.statista.com/statistics/1218597/japan-purified-water-volume/ (last visited July 16, 2025)
Amount of purified water in Japan from 2000 to 2021 (in billion cubic meters) [Graph], JWWA, June 17, 2024. [Online]. Available: https://www.statista.com/statistics/1218597/japan-purified-water-volume/
