The general rule I've seen stated is that to get rid of some nasty bacteria, one should rinse fruit and vegetable under running water before using them, especially if eaten raw.
Most likely the effectiveness of such a measure depends significantly on the details of how this rinsing happens. So, by how much is the risk of health problems reduced in different cases (e.g. just bath the fruit&vegetable in a water bowl, pass them quickly under running water, bath them and scrub them, keep them for a minute under running water (moving them around and scrubbing them at the same time), ...).
Of course, assuming those fruit&vegetable have already been washed earlier (e.g. before we bought them).