It’s always interesting to find something like this which needs a bit of extra knowledge to be able to map it correctly.

You could use https://wiki.openstreetmap.org/wiki/Tag:man_made=pumping_station for the pumping station (I think waterworks is more for water treatment places).

Thanks for testing these darker colours, it’s good to move away from the pastel shades towards something nicer on the eye. :)

PS Should parks even have a fill colour? If mappers map out all the grass areas, pitches, playgrounds etc there should only be need for an outline and name.

Looks good. I’d probably make the motorway blue a little darker so it looks less watery and somehow make the yellow on green easier to read.