Marine waters affected by eutrophication by country
Countries reporting
33
Highest
12,386 Square kilometre
Denmark
Lowest
0 Square kilometre
Bulgaria
Median
5 Square kilometre
Years covered
25
2001–2025
Data points
1,025
What the numbers show
Marine waters affected by eutrophication is currently reported for 33 countries. The highest value is 12,386 Square kilometre in Denmark; the lowest is 0 Square kilometre in Bulgaria.
The median across all reporting countries is 5 Square kilometre, and the mean is 733.33 Square kilometre.
Over the past decade 7 countries rose and 23 fell. The largest increase was in Ireland (up 3,600.0%), and the largest decrease in Lithuania (down 100.0%).
Marine waters affected by eutrophication: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Denmark | 12,386 Square kilometre | 2025 | up 20.8% | volatile |
| 2 | France | 4,289 Square kilometre | 2025 | up 1,636.4% | volatile |
| 3 | Spain | 3,011 Square kilometre | 2025 | down 5.5% | volatile |
| 4 | Norway | 1,575 Square kilometre | 2025 | up 1,160.0% | volatile |
| 5 | Portugal | 699 Square kilometre | 2025 | down 40.7% | volatile |
| 6 | Finland | 650 Square kilometre | 2025 | up 177.8% | volatile |
| 7 | United Kingdom | 529 Square kilometre | 2025 | down 43.7% | volatile |
| 7 | United Kingdom | 529 Square kilometre | 2025 | down 43.7% | volatile |
| 9 | Estonia | 137 Square kilometre | 2025 | up 341.9% | volatile |
| 9 | Estonia | 137 Square kilometre | 2025 | up 341.9% | volatile |
| 11 | Sweden | 117 Square kilometre | 2025 | unchanged | volatile |
| 12 | Ireland | 37 Square kilometre | 2025 | up 3,600.0% | volatile |
| 13 | Germany | 34 Square kilometre | 2025 | down 77.0% | volatile |
| 14 | Italy | 27 Square kilometre | 2025 | down 74.8% | volatile |
| 15 | Croatia | 11 Square kilometre | 2025 | down 47.6% | volatile |
| 15 | Croatia | 11 Square kilometre | 2025 | down 47.6% | volatile |
| 17 | Poland | 5 Square kilometre | 2025 | down 64.3% | volatile |
| 17 | Poland | 5 Square kilometre | 2025 | down 64.3% | volatile |
| 19 | Belgium | 3 Square kilometre | 2025 | — | volatile |
| 19 | Netherlands | 3 Square kilometre | 2025 | down 94.4% | volatile |
| 19 | Netherlands | 3 Square kilometre | 2025 | down 94.4% | volatile |
| 22 | Latvia | 1 Square kilometre | 2025 | down 80.0% | volatile |
| 22 | Latvia | 1 Square kilometre | 2025 | down 80.0% | volatile |
| 24 | Lithuania | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Malta | 0 Square kilometre | 2025 | — | volatile |
| 24 | Slovenia | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Slovenia | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Romania | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Lithuania | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Iceland | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Greece | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Cyprus | 0 Square kilometre | 2025 | down 100.0% | volatile |
| 24 | Bulgaria | 0 Square kilometre | 2025 | down 100.0% | volatile |
Regions and income groups
Aggregates are excluded from the country ranking above so that a region can never outrank a country.
- European Union (aggregate changing according to the context) 21,409 Square kilometre