Arghhh cannot find pump in my Peugeot boxer pilots motor home

[jilldowson]

As above cannot find water pump in my Peugeot boxer pilots motor home helpppp

 

[pappajohn]

Maybe a submersible pump.... Inside the water tank.
The tank will have a large round, 6 or 7 inch, inspection cover which screws on.
Undo that and have a look inside.