Is litter considered illegal dumping?

No.

The Act defines litter as 'any refuse, rubbish, animal remains, glass, metal, garbage, debris, dirt, filth, rubble, ballast, stones, earth or waste matter, or any other thing of a like nature.'

It can be:

You should know: We do not remove dumped rubbish on private property. The owner of the property is responsible for the disposal of rubbish dumped on their property.