Not sure we're talking about the same thing. I mean with 100% clean water and a 100% clean screen the water has a hard time getting through the screen. As the holes get smaller there is more material per square inch blocking water. So a water drop might have to bounce more times until it hit an opening.
I assumed you were talking about little bits of crap clogging holes and it having to be hosed off.
correct i misunderstood,