«If we assume
an average microplastics concentration on the day we took the water sample in Rees, we can say that the Rhine contributes a daily load of more than 191 million plastic particles to the North Sea, and that only takes into account the surface.
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).
Not exact matches
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.
Plastic travels up the food chain, with the
average seafood eater consuming 11,000 pieces of
microplastic a year.