Water Pressure ChangeDecember 9th 2009
Q. The water pressure in my bathroom taps have suddenly dropped but the taps in the rest of the house have the usual pressure. Can you tell me why this is happening and what I can do to fix this?
A. Considering the low water pressure is located in one area and not affecting all the faucets in the house, the first thing I would check is the aerators in the faucets that are giving you the problem. The aerator may be filled with sand residual from your water supply and pipes which is impeding the water flow. Carefully remove the aerator and note how the different parts are assembled, then thoroughly rinse to ensure all parts are free of debris; you may have to soak them in vinegar overnight to remove built up hard-water deposits.
If the pressure drops throughout the whole home then you would check the main water line. If you are on city water and have very low water pressure, there are a few things that you can do. Make sure that the main water shut-off valve on the water inlet is fully open. Typically, water pressure can be adjusted at the pressure reducing valve on the entry water line into your home. I do not advise that the homeowner do this, please contact a plumber.