Start by figuring out whether it is one fixture or the whole house. A single slow faucet is almost always a clogged aerator or a failing cartridge, and both are quick repairs you may be able to do yourself.
If pressure dropped everywhere at once, the usual suspects are a failing pressure regulator, a partially closed main valve, or a corroded service line between the meter and the house. Galvanized service lines in older Valley homes narrow from the inside as they scale up.
There is also a quiet possibility worth ruling out: a hidden leak. If your meter keeps moving with every fixture off, water is going somewhere it should not.
We test static pressure at the hose bib, check the regulator, and locate leaks without tearing the house apart. Call 209.838.1000 and we will diagnose it properly.
Need a plumber in the 209 & 350?
Family owned in Escalon since 2010. CA Lic. #953726 (C-36 Plumbing). Flat-rate quotes before we start.