Unknown wet areas on our brickwork!

I noticed these patches a little while ago but a neighbour emailed me today as well with a concern. Is it possible to have a water leak that comes through the brickwork?

See photo and let me know what you think? One wet area located near weep hole and the other more obvious to the left of the future hot water service.

All i can think of is that the guys who put the cabinetry in missed the stud and screwed through a pipe? It makes sense considering the wet areas appeared roughly the same time the water was turned on!