If you are experiencing low water pressure or no water at all, make sure you have paid your utility bill and check with your neighbors to see if they are experiencing the same problem. If your neighbors are ok, then the problem is most likely within your plumbing. If your neighbors are having a problem too, call the City at (714) 593-4420.
You can easily find out where the problem might be by opening an outside spigot. If there is good water pressure, then the problem is somewhere within your plumbing system. Check all of the water valves to your home and make sure they are open all the way. The main water valve is usually located in front of the house before the hose bib. Additionally, check the water supply lines to the water fixtures and make sure those are also fully open. If all the water valves are fully open, check the water pressure throughout the house to see if the problem is isolated to one location. If the water pressure is low/weak throughout the house, you may have a pressure regulator that is in need of adjustment or repair. Pressure regulators are typically located right after your main water valve shutoff at the front of the house and have screens that need to be routinely cleaned. If they get plugged, they will prevent water from reaching your house. If the water pressure is low/weak in just a few areas, remove and check the faucet aerators to see if they are clogged. A plumber may need to be called to see if there are any plumbing issues inside the home. If water pressure is ok when you first open a valve but quickly drops off, you probably have an obstruction within your plumbing.