If the pressure is low all over the house, you can call the Water Dept. Meter Division at 847-931-6162 and they can investigate. If the pressure is low at only a few sinks, you can do some investigating. Remove the aerator from the faucet and inspect for debris that may be obstructing water flow. The debris may be sediment from your plumbing or it may be pieces of your hot water heater’s dip tube (a plastic rod from the inside of your hot water heater that has been proven defective in certain models. All hot water heaters manufactured between 1993 and 1997 could have faulty dip tubes.) Dip tube debris will be white, gray or light-green tinted granular or eggshell-like particles. Place some of the debris in a small glass of water. If it floats, it’s probably dip tube pieces. This is a hot water heater manufacturing problem and will need to be addressed by a plumber. If you have questions about this, call the water quality laboratory at 847-931-6158.