Originally Posted by RaymondR
In the urban environment most of that stuff goes into the sea via the sewage systems and the rivers they dump the outfall into so I would not be particularly worried about it. However you need to be fanatical about keeping anything mineral oil
based or petroleum based and plastics out of the sea.
Just because landlubbers do it does not make it right.
The most worrying are plastic microbeads. The small pieces of plastic commonly found in toothpaste, exfoliating body scrubs and other household products.
The UK banned these in 2017, don't know about other countries. The difficulty for cruisers is of course identifying any offending products sold
in different countries that they are travelling through.