Thankfully, there are usually only a few things to blame for low water pressure in the kitchen sink: Clogged
Check Your Faucet Cartridge
Your faucet cartridge sits deeper in your faucet than your aerator and has a hole through which water passes. These cartridges become clogged or blocked by hard water build up which produces low water pressure in kitchen faucets. Often, they just need to be cleaned.
Sediments, mineral deposits, or small debris can clog the aerator over time, which results in low water pressure. To restore water flow due to a clogged aerator, use pliers to remove the aerator from the faucet, scrub it with an old toothbrush and rinse in water.
If you've cleaned the aerator and the water flow is still weak, there may be a clog in the pipes. As time goes by, mineral deposits build up in your pipes. This will slow water flow and, eventually, may even cause your pipes to burst. Now is a good time to call in a professional plumber.
Damaged washers reduce your tap's water supply to a trickle, before stopping it completely. If your tap starts producing only a trickle of water, you should consider replacing your washer. Similarly, if excessive whistling or chattering noises are coming from your tap, this is usually caused by a dislodged washer.
Low pressure is the most common sign of a clogged aerator, but sometimes the faucet can also misdirect water, spraying it on the side of the sink or even onto the vanity.
Sometimes, low water pressure can be the result of mineral deposits and debris buildup within the aerator. All you need to do is give the tap a good clean, remove the aerator (usually by unscrewing the end) and gently clean the part. Take note of where each part goes and reassemble once clean.
Some include a shut or blocked water meter valve, mineral buildup clogs pipes, corroded pipes, or even a crack in the main city supply pipe to your home.
Usually, the aerator is screwed on tight and can simply be unscrewed and removed quite easily. In other cases, though, the buildup of mineral deposits may freeze up the aerator and make it hard to remove.
It's recommended you replace the aerator annually, and then clean the aerator twice a year. If the aerator appears to need frequent cleaning or becomes worn, the aerator may need to be replaced more often. Lead from fixtures, soldered joints, or pipes can get into your water.
Aerators help keep pieces of lead and other particles from getting into your water. Clean your drinking water faucet aerator at least every six months. If there is construction or repairs to the public water system or pipes near your home, clean your drinking water faucet aerator every month until the work is done.
A faucet aerator looks like a small end piece for the faucet with a mesh screen disk. Find out the aerator's many valuable purposes and why you usually don't want a faucet without an aerator.
Chances are, it's air traveling around and out of your plumbing. Look at Water Quality – If your hot water is cloudy and sputtering, it's likely another sign that air bubbles have entered your plumbing. Inspect for Leaks – It's also possible that a slow leak is affecting the water pressure.
Materials You'll Need
Fill a plastic bag with half water and half vinegar, ensuring there is enough liquid to submerge the faucet head. Put the liquid-filled bag over the faucet head and secure it with a rubber band. Let stand for 30 minutes to one hour. For more sensitive fixture finishes, do not surpass 30 minutes.
Each aerator consists of a small screen which spans the opening of the faucet. This screen serves to break up the water stream into many smaller streams. This function introduces more air into the stream without reducing the perceived water pressure.
Most likely, the aerator is clogged. Unscrew the nozzle and check for a broken or misaligned washer. Next you'll likely see mineral crumbles and debris collected at the screen.