Water pressure light???

[Drew Denham]

Hi all, My new rental has low water pressure when you run the shower and sink at the same time. Any thoughts what the problem might be?? Thx!!

[Michael Herr]

The problem is likely inadequate supply plumbing or some other restriction. 

What type/size of pipes do you have?

In my area it's very common to have old galvanized pipes with bad pressure.  

It's also common to have galvanized oipes that are just fine,  but they shed some rust and that plugged up your fixtures. 

Very common especially if water was off. Pull the strainer from your sink,  pull the showerhead,  run the water.  Get a new showerhead (there are ones that are designed for low water pressure)  If this doesn't fix the problem,  then it might be the supply pipes.