In 2020, wastewater treatment in Spain generated 1.15 million metric tons of sludge – in dry weight – down from 1.21 million metric tons in 2018. Accordingly, the volume of wastewater treated in the Mediterranean country also decreased in 2020 when compared to 2018.
Sludge generated from wastewater treatment in Spain from 2011 to 2020
(in million metric tons)
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INE (Spain). (July 6, 2022). Sludge generated from wastewater treatment in Spain from 2011 to 2020 (in million metric tons) [Graph]. In Statista. Retrieved March 16, 2025, from https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed
INE (Spain). "Sludge generated from wastewater treatment in Spain from 2011 to 2020 (in million metric tons)." Chart. July 6, 2022. Statista. Accessed March 16, 2025. https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed
INE (Spain). (2022). Sludge generated from wastewater treatment in Spain from 2011 to 2020 (in million metric tons). Statista. Statista Inc.. Accessed: March 16, 2025. https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed
INE (Spain). "Sludge Generated from Wastewater Treatment in Spain from 2011 to 2020 (in Million Metric Tons)." Statista, Statista Inc., 6 Jul 2022, https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed
INE (Spain), Sludge generated from wastewater treatment in Spain from 2011 to 2020 (in million metric tons) Statista, https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed (last visited March 16, 2025)
Sludge generated from wastewater treatment in Spain from 2011 to 2020 (in million metric tons) [Graph], INE (Spain), July 6, 2022. [Online]. Available: https://www.statista.com/statistics/1393854/wastewater-treatment-sludge-generation-spain/?__sso_cookie_checker=failed