Before trying anything else, conduct a quick inspection of the water shut-off valves for your house. All valves should be in the full, open position. Most valve handles in the open position run parallel with the pipe. A valve in an angled or cross-position relative to the pipe will restrict water flow.
So before you replace that shower pan or bathtub. the University of Colorado, hospitals, hotels, resorts, contractors, and of course thousands of happy homeowners. Whether it’s a brand new home.