I had high water pressure (105 psi) and low water flow at up stair faucets and shower head problem. Yes, high pressure and low flow. I have just fixed the high pressure problem by replacing my pressure regulator. The pressure now is 60 PSI; however, my water flow is still low. I am puzzle as to how I get get low water flow at multiple outlets inside the house. Note that water flow at outside faucets are good. I live in Southern California and house is only 10 years old. So, I guess it's equipped with copper pipes and I do not have corrosion problẹm. Thank you in advance for your suggestions.

Remove the Aerators from the faucet spouts clean and install, for the shower remove the shower head clean and install, see now how is the flow, good luck.

John

Hi John,

Thank you for your response. I cleaned the shower head but it did not help. I even put in a new shower head and it also did not help. I then removed the shower head from the outlet pipe to see how the water flow, it's weak. Any other suggestions?

I then removed the shower head from the outlet pipe to see how the water flow, it's weak. Any other suggestions? Is there a water softener or house filter involved? Let's start with the shower. What type of shower valve do you have? One handled or two? The brand name? How old is it?
Shut the water off to them shower valve and open it up. If one handled remove the cartridge and check the inlet ports for blockage. Now, with the valve still open turn the water back on to flush out the supplies. You should see a strong when you do this. M If not tell me about it.
Good luck, Tom

Is there a water softener or house filter involved? Let's start with the shower. What type of shower valve do you have? One handled or two? The brand name? How old is it?
Shut the water off to them shower valve and open it up. If one handled remove the cartridge and check the inlet ports for blockage. Now, with the valve still open turn the water back on to flush out the supplies. You should see a strong when you do this. m If not tell me about it.
Good luck, Tom

There is no water softener or house filter. I have the one handled shower valve. I don't know its brand name. It's 10 years old. I am an average handy-man skilled person and I am not sure if I am qualified to remove the cartridge. Is it easy to do so? Any special tools required One more thing, with the cartridge removed, wouldn't the water spill out of my wall if I flush the pipe?

Now I have just checked my down stair bathroom shower pipe flow output (with shower head removed) and it is also weak. I think the pipe is not too far (~12 feet) from the pressure regulator. This leads me to think water flow inside my house is ALL weak. Note: I have also just checked an outside faucet which attaches to the house, on the other side of my kitchen wall; its water flow is strong. I think this faucet is after the pressure regulator. Still puzzled...

Thank you for your help.