Why low water pressure only at specific taps?
I have adequate water pressure coming into the house, 90psi at the meter, pressure reducing valve lowers it to 60 psi. This is verified by an inline pressure gage.
Some taps have good pressure/flow but the main bath pressure/flow is steadily decreasing slowly. I have replaced shower heads, cleaned filters but no success.
I had a plumber over to assess the situation but he said he didn't know why only some areas are low pressure.
The house is a basement rancher and the problems are on the main level. There is good pressure/flow at other places on the main level. The house is 10 years old. Any ideas why the pressure/flow in one bath is low while one 10 feet away (across a wall) is fine?