"I wander through each chartered street, Near where the chartered Thames does flow"
The verb "wander" makes it seem as though the speaker is alienated from the place he once loved and he's just walking aimlessly
"chartered" the repetition conveys how everything in the city is fixed and regulated, the speaker clearly resents being so confined
The juxtaposition of 'charted' and 'thames' (a river) conveys how even nature is being controlled