Catalonia generated over ** metric tons of sludge from wastewater treatment in 2020 – more than any other autonomous community across Spain. Ranking second that year was Andalusia, with nearly ** metric tons of wastewater treatment sludge. Both Catalonia and Andalusia were the autonomous communities that treated the largest volume of wastewater across Spain in 2020.
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INE (Spain). (July 6, 2022). Sludge generated from wastewater treatment in Spain in 2020, by autonomous community (in metric tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/
INE (Spain). "Sludge generated from wastewater treatment in Spain in 2020, by autonomous community (in metric tons)." Chart. July 6, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/
INE (Spain). (2022). Sludge generated from wastewater treatment in Spain in 2020, by autonomous community (in metric tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/
INE (Spain). "Sludge Generated from Wastewater Treatment in Spain in 2020, by Autonomous Community (in Metric Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Jul 2022, /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/
INE (Spain), Sludge generated from wastewater treatment in Spain in 2020, by autonomous community (in metric tons) ÌÇÐÄÆƽâ°æ, /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/ (last visited July 24, 2026)
Sludge generated from wastewater treatment in Spain in 2020, by autonomous community (in metric tons) [Graph], INE (Spain), July 6, 2022. [Online]. Available: /statistics/1393876/wastewater-treatment-sludge-autonomous-communities-spain/
