Thanks for the replies. I'm not complaining per se about my water pump's output. It gets the job done. Just curious if anyone else has done this simple realworld test with their shower head. If everybody else is getting more than 1.25/1.5 gpm (shower head on/off), then, maybe I'll start checking things further. I believe it's a legitimate apples to apples test. Why did I pick the shower head? IMO if I could pick one area on an RV where more is always better, I'd pick shower head water pressure. Again, my water pump and system gets the job done. Just wonderin' how it stacks up against others. Thanks!