 How old is the house? So if I have it, how do I adjust that? Is that a city problem or my problem? I would call the city first because they're going to check your volume coming in too. A lot of times people think they have low water pressure and the pressure is fine. It's the volume of water. For instance, well, what I would do first is do it on the outside faucet, see what it is that gives you a low rating.