Zeiyad

About 1 month ago my BMW X1 Xline 67 reg started to develop faulty in the washer. Very quickly the front, rear washer stopped working. Had it looked at by a mechanic, said it could be the pump. Another person looked at it said the pump is still working. There are no leaks, does not look like its clogged up. What could be the fault. The BMW has full service since bought from new. Does this happen often to bmw X1? Any idea what could be wrong, is it worth trying a New pump to prove the fault.