Between Basel and Rotterdam, the Rhine has one of
the highest microplastics pollution so far measured in rivers, with the Rhine - Ruhr metropolitan area showing peak numbers of up to four times the average.
Not exact matches
In fact, terrestrial
microplastic pollution is much
higher than marine
microplastic pollution — an estimate of four to 23 times more, depending on the environment.
The minimum average
microplastics pollution was found in the stretch between Basel and Mainz (202,900 particles per square kilometer), a medium average at Bad Honnef, Köln - Porz and Leverkusen (714,053) and the
highest average in the Rhine - Ruhr metropolitan area (2,333,665).
The levels were so
high that scientists are revising up their estimates for global marine
microplastic pollution.