Another factor that may affect your water pressure would be your valves. Check all of the system’s shut-off valves, including the one that is attached to the water meter. In order to get the highest pressure as possible, all of these valves need to be completely open.
If the water meter seems to be sealed, then you will have to get in touch with your water supplier for help. Unauthorized servicing usually isn’t recommended for these kinds of meters. However, if you are allowed to work on it yourself, then make sure you get the right plumbing tools before you get to work.
If this doesn’t seem to be the cause of your low water pressure, though, then check out all of the main water shut-off valves inside the house instead. These need to be completely open, too. However, if you have one on the water meter,then you will have to get an expert to help you out because you could easily damage it if you have no idea what you’re supposed to be doing.
In fact, if you have no idea what to do, in general, it would always be best to call in the experts. If you already checked all of your valves yet still experience low water pressure, for example, then you might need to look into new water line installation. If your area is prone to earthquakes, on the other hand, then it might have something to do with earthquake damage, so make sure you check out your pipes for breaks and leaks along the line.