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Low Water Pressure in Kitchen Sink? Here are Common Causes and Fixes

low water pressure in kitchen sink

Experiencing low water flow at the faucet in your kitchen is one of the most typical water supply line issues homeowners encounter. The root cause could be caused by something straightforward, such as a blocked bathroom or kitchen faucet.

However, the issue could be traced to something as severe as a leak in the plumbing system.

Low water flow in the kitchen sink is typically caused by a clogged aerator or a clogged cartridge. You can unscrew and remove the aerator or faucet cartridge from the sink or soak them overnight in distilled white vinegar to remove the buildup. You may also replace them.

However, there are other causes of low water pressure in your kitchen sink. Here is how you can address them:

Checking for Low Water Pressure

Here are a few easy steps to determine if you have low water pressure at home:

  1. Turn on the main water shut-off valve for your home.
  2. Let the water run for a few minutes after turning on your faucet.
  3. Check the water pressure. The water pressure gauge should read between 40 and 60 psi.
  4. If the gauge reading is less than 40 psi, you have low water pressure.
  5. If you have a hot water heater, low hot water pressure could be a culprit. You can check the pressure gauge if the reading is less than 40 psi. In that case, only the hot water system could be at fault.

What Causes Low Water Pressure in Kitchen Sink?

Once you determine you have low water pressure, it is time to find out why. Here are ten potential causes that lead to low water pressure:

Clogged Faucet Aerator

A clogged faucet aerator, as mentioned earlier, is the most common cause of low water flow. The aerator is a small screen that regulates water flow. This screen clogs over time, causing low water pressure.

Leaking Fixtures

Fixture or pipe leaks are another potential reason leading to low pressure. Leaky fixtures and pipes won’t only cause low water pressure, but they can also cause significant water damage or mold growth.

Clogged Pipes

Sediment or debris could build up in pipes over time. Once a significant buildup is present, water will be difficult to flow through your plumbing system. Moreover, clogged pipes can also lead to severe issues, such as a pipe leak or a pipe burst.

Low City Pressure

The city water supply could also be at fault. In this case, there is nothing much you can do about it. However, if you opt to, you may install a water pressure booster if this problem is consistent in your area.

Faulty Water Pressure Regulator

Your home’s water pressure can go lower if the water pressure regulator is not working properly. Typically, once this occurs, not only the kitchen sink water pressure will be affected but your whole home as well. You will determine this if you still have low pressure despite high readings.

Burst Pipes

In cold wintry conditions, iron pipes are prone to bursting. Once this happens, the drop in water pressure is sudden. If you suspect burst pipes are the issue, you need to shut off your main water valve and call a plumber as soon as possible.

Dirty Water Filter

You must change the filter regularly if you have a home water filtration system. Especially for areas with hard water supply, filters tend to clog faster.

Old Water Pipes

Older pipes corrode or can be damaged easily. Older pipes are also more likely to leak.

Break in the Water Main

In the case of a broken water main, the water supply lines in your entire neighborhood will be affected. This may happen because of earthquakes or severe storms. Once you suspect a broken water main, call your local water utility company immediately.

Best Ways to Improve Water Pressure in Your Kitchen Sink

To address most of the causes of low water pressure in your kitchen sink, here are ways to ensure that you will have optimal water pressure:

Replace Old, Corroded, and Damaged Pipes.

Though it will take a considerable investment, replacing old pipes can address most of your plumbing concerns looking forward. As pipes age, they are prone to leaks and bursts, leading to more severe issues. Freezing or cold water in winter may lead to pipe bursts at one point. In this case, you will need help from a journeyman plumber or seasoned plumbing professional.

Installing a Water Pressure Booster.

If you have concerns about your municipal water supply, installing a water pressure booster can ensure that you have water pressure levels between 40 and 60 psi. A water pressure booster can also help ensure that adequate pressure levels reach your home’s upper floors.

Replace Your Water Filters Regularly.

Consult your water filtration system’s owner’s manual for the appropriate filter replacement times. However, if your neighborhood’s water supply has significant sediment content, expect to replace your filters more frequently.

Install a Water Softener.

To ensure that mineral deposits don’t compromise your water heater, installing a water softener will help immensely. Hot water pressure is also one of the typical causes of low water pressure coming into the kitchen sink.

Install a Pressure Reducing Valve.

A persistently high water pressure supply can damage your plumbing system, especially if you have older pipes. There are cases when homes receive a higher water pressure supply. In that case, a pressure-reducing valve ensures that the water pressure range is between 40 and 60 psi.

Clean Your Aerator Regularly.

An aerator is a metal or plastic screen that is relatively easy to remove from your kitchen faucet and clean. Being the likeliest cause of low pressure of water coming into the kitchen sink, cleaning the aerator can fix low water pressure in most cases. Soaking them overnight in vinegar can remove deposits that are challenging to remove.

Ensure Your Hot Water System Is Maintained.

Various problems may occur once your water heater lifespan nears its end. Aside from leaks on the hot water supply lines, sediment buildup can compromise the water pressure coming into your kitchen sink.

For Water Pressure Problems: Call A Professional Plumber To Save Time

Aside from a clogged aerator or cartridge, many causes of low water pressure in the kitchen sink are challenging to address. To ensure normal water pressure flows into your faucets, you must check your plumbing systems regularly. Once you encounter low water pressure, you may need professional help to address the issue immediately. You can reach our plumbing service company in Mesa, AZ at (480) 649-4400. P&L Plumbing also serves the cities of Gilbert, Tempe, Scottsdale, and Apache Junction.https://pandlplumbing.com/

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