Catalonia treated the largest volume of wastewater amongst all autonomous communities in Spain in 2020, at approximately **** million cubic meters per day. This was closely followed by the southern autonomous community of Andalusia, with some **** million cubic meters per day of wastewater treated. That year, the total volume of wastewater treated in Spain amounted to around **** million cubic meters per day.
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INE (Spain). (July 6, 2022). Volume of wastewater treated in Spain in 2020, by autonomous community (in 1,000 cubic meters per day) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/
INE (Spain). "Volume of wastewater treated in Spain in 2020, by autonomous community (in 1,000 cubic meters per day)." Chart. July 6, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/
INE (Spain). (2022). Volume of wastewater treated in Spain in 2020, by autonomous community (in 1,000 cubic meters per day). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/
INE (Spain). "Volume of Wastewater Treated in Spain in 2020, by Autonomous Community (in 1,000 Cubic Meters per Day)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Jul 2022, /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/
INE (Spain), Volume of wastewater treated in Spain in 2020, by autonomous community (in 1,000 cubic meters per day) ÌÇÐÄÆƽâ°æ, /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/ (last visited July 23, 2026)
Volume of wastewater treated in Spain in 2020, by autonomous community (in 1,000 cubic meters per day) [Graph], INE (Spain), July 6, 2022. [Online]. Available: /statistics/1393865/wastewater-volume-treatment-autonomous-communities-spain/
