bar_chart Campaign Results 2022โ€“2024

What 25,000 Young
Scientists Found in
Europe's Rivers

2022โ€“2024  ยท  13 countries  ยท  390+ rivers  ยท  Verified scientific data

771
Verified Samplings
390+
Rivers Mapped
13
Countries
1,400+
kg Plastic Collected
Finding 01

Plastic Dominates
Europe's Rivers

In all 13 countries, plastic was the most common litter type found along riverbanks and in the water.

Young scientists collected and categorised every item they found โ€” from bottle caps and food packaging to cigarette filters and glass fragments. Across every country, plastic emerged as the dominant material, often accounting for more than a third of all litter by item count.

35% plastic
Plastic 35%
Cigarette Butts 24%
Glass 21%
Paper 12%
Metal 8%
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In Hungary, Spain and Bulgaria: over 90% of plastic items were single-use plastics

Finding 02

Where Plastic
Pollution Is Highest

Total Plastic Collected per Country (kg) ยท 2022โ€“2024

Portugal
734 kg
Spain
712 kg
Austria
380 kg
Italy
340 kg
Lithuania
290 kg
Germany
79 kg
Slovenia
65 kg
Belgium
60 kg
Greece
45 kg
Hungary
38 kg
Bulgaria
20 kg
Latvia
8 kg
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Portugal recorded the highest average plastic weight per sampling

shopping_bag

Spain collected over 11,000 single-use plastic items

Finding 03

Who Leaves
the Litter?

Sampling groups estimated the likely sources of litter they found

Recreational Visitors 88%
Local Residents 41%
Illegal Dumping 28%
Agriculture 15%
lightbulb

Recreational visitors were the most commonly suspected source across all 13 countries

From Germany to Europe

2016

Plastic Pirates launched in Germany by Kiel Science Factory

2020

15,000+ young people participate across all 16 German states

2022

European expansion โ€“ 9 countries join the campaign

2024

13 countries ยท 25,000+ participants ยท 390+ rivers mapped

info

Data covers sampling campaigns from autumn 2022 to autumn 2024. Scientific analysis is ongoing. All verified datasets are publicly available on Zenodo under open licences.

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