Dears

This morning when I start the car, there is noise coming from the engine bay, could it be a water pump problem?

It could be many things, you'll need to give us a bit more information, what does it sound like, where is it coming from, does it increase with engine speed etc? Landrover - turning owners into mechanics since 1948

2014 Orkney grey Freelander SD4 GS.
2004 Zambezi silver Discovery 2 Td5 (Gone)
1963 Surf blue Morris Mini Minor Super de Luxe (my little toy)

That water pump is generally very reliable.
As above it could be many things. A YouTube video of the issue will help. Hyundai Ioniq 5 Ultimate. The family car.
2009 Rimini Red SE TD4. Gone.
2006 Tonga Green i6 HSE. Gone.
Audi A5 convertible, my daily driver.
1972 Hillman Avenger GT, the project.

It's steering pump

Have you changed the steering fluid reservoir and fluid? if not that could be causing the noise. 2013 FL2 XS.
Defender 90 300 TDi.
Defender 90 300 TDi CSW.
1964 MGB Roadster.
1944 Willys MB "Jeep" with bullet holes. (gone)
17 hand Irish Drought Thoroughbred (mostly lame)
Nagging Old Boiler.

Mahatma Gandhi said if there is an Idiot in power those who elected him are well represented

yep - first change the PAS fluid (CH202 IIRC) and the reservoir (which cantains a non-replaceable filter) Jules

The none replaceable filter gets blocked putting the PAS pump under stress. Change the PAS reservoir and give it some new fluid of the correct grade.

It would be a good to change the thread title! Save confusion when people start reading the thread and suddenly find discussion on PAS systems.