Low water pressure in sink faucet
Clogged aerators and clogged cartridges are two of the most common causes of low water pressure in a sink. The aerator is the tip of the faucet that the water comes out of, while the cartridge is found underneath the sink handle and enables you to stop and start the flow of water.
In most cases, the easiest way to increase a faucet's flow rate is by replacing the aerator. Try looking for a higher gpm model to allow for more gallons per minute. If you live in a low water pressure area, an aerator designed to restrict water flow might be reducing the flow too much.
Please keep in mind that all new faucets since 1994 are restricted to conserve water per EPA code mandates. Older faucets had no restrictions. Beyond intentional flow restriction, new installations can sometimes have reduced flow if the lines are not flushed prior to installation of aerators or shower heads.
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.
While it is possible to remove flow restrictors from shower heads, we strongly advise against it for several reasons. Flow restrictors for faucets are an integral part of most aerators and it is generally not possible or desirable to remove them.
According to federal regulations, all kitchen and bathroom faucets should have a maximum flow rate of 2.2 gallons per minute (gpm) at 60 psi (pounds per square inch) of pressure; in California and Georgia, maximum flow rates are further restricted to 2.0 gpm (California will eventually be restricted to 1.8 gpm).
Sink Faucet
Since 1994, faucet standards have been between 2.2 gpm and 2.5 gpm. Aerators are the nozzles with a screen on them that the water flows out of on your sink faucet.
If it's a sink, the most common causes are a clogged aerator or clogged cartridge. You can remove both using a pair of pliers, and clean them with a mix of water and white vinegar to scrub away limescale buildup.
Faucets sputter as air in the pipes work its way out. If faucet sputtering continues, you might need to clean or replace faucet parts. A malfunctioning water heater can lead to inconsistent heating and sputters at the faucet. If the water at the tap is too hot or you hear noises at the water heater, call a pro.
Replace the Washer
In some cases, a tap can become blocked simply because the washer has loosened and dislodged, physically blocking the water flow. Turn the shutoff valve, disassemble the faucet, and replace the washer with a new one. If you get a smooth flow of water, your problem is solved!
The adjustment screw raises and lowers the water pressure, but before it can be adjusted, you need to loosen the lock nut below it. Loosen the lock nut by half a turn with the crescent wrench. Turn the adjustment screw counterclockwise to lower the pressure or clockwise to raise the pressure.
Removing the water restrictor from your showerhead can also improve water pressure. Removal might also clear out mineral build-up around the restrictor. It's fine for you to remove one if you live in an apartment unless otherwise stated. Note that your water bill may increase after removal.
Why does my faucet have low water pressure? Remove the aerator or showerhead and make sure the debris screen is not clogged. Additionally, flushing the system properly will help to reduce the possibility and frequency of occurrences.
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.
Kitchen Sink Faucets - All kitchen sink faucets shall comply with federal standards for a maximum flow rate of 2.2 gallons per minute (gpm) (8.3 lpm). A flow test does not exceed 0.4 gal.
A low-flow sink faucet must not exceed a maximum of 1.5 GPM. A low-flow toilet must use no more than 1.5 gallons per flush (GPF).
Kitchen faucets may temporarily increase the flow above the maximum rate, but not to exceed 2.2 gallons (8.3 L) per minute at 60 psi, and must default to a maximum flow rate of 1.8 gallons (6.81 L) per minute at 60 psi.