Iceland has the cleanest waters across Europe, having received an index score of 86.07 points in 2023. Other European countries with scores above 80 points that year were Finland and Slovenia. Outside of Europe, Canada held a score of 88.75 points, topping the list of the cleanest waters worldwide.
Clean waters score in Europe as of 2023, by select country
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Clean waters score in Europe as of 2023, by select country
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The clean water index measures pollution by chemicals, excessive nutrients, human pathogens and trash in estuarine, coastal, and open ocean waters.
Clean waters target is 70 out of 100.
The source adds that the reference point is that there should be zero pollution from chemicals, nutrient, human pathogens and trash. This goal score is higher when the pollution of estuarine, coastal, and open ocean waters is minimized. The goal score is lower when there are high levels of pollutants.
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Erick Burgueño Salas
Research expert covering climate change and the water industry
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Ocean Health Index. (December 31, 2023). Clean waters score in Europe as of 2023, by select country [Graph]. In Statista. Retrieved April 26, 2025, from https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/
Ocean Health Index. "Clean waters score in Europe as of 2023, by select country." Chart. December 31, 2023. Statista. Accessed April 26, 2025. https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/
Ocean Health Index. (2023). Clean waters score in Europe as of 2023, by select country. Statista. Statista Inc.. Accessed: April 26, 2025. https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/
Ocean Health Index. "Clean Waters Score in Europe as of 2023, by Select Country." Statista, Statista Inc., 31 Dec 2023, https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/
Ocean Health Index, Clean waters score in Europe as of 2023, by select country Statista, https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/ (last visited April 26, 2025)
Clean waters score in Europe as of 2023, by select country [Graph], Ocean Health Index, December 31, 2023. [Online]. Available: https://www.statista.com/statistics/1203428/clean-water-index-europe-by-select-country/
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