We have good water pressure in the house. Our problem is in the master bedroom. IfANY other water is on, it goes from GREAT water pressure to a small spit. :confused: Is there any way to fix that?

This is a volume problem. How old is your house? What kind of pipes? Copper, plastic or galvanized? Regards, Tom

It is about 30 years old, but the master is an add-on and the pipes are plastic.

When they added onto your existing structure they just tapped onto the end of the old run but did not increase the size of the supply pipe. Like Tom says it all volume with this type of system. The supply was origianlly sized for the fixtures that were intended and now you have several more fixtures. The only real fix would be to go back and increase the size of the supply line back to the city meter but you can't go any larger than the city supply pipe so check on its size first.