High Water Pressure in Your Home? Symptoms, Causes & What You Can Do

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Water pressure in a house is generally too high when it exceeds 80 PSI. Most homes perform well with water pressure around 40 to 60 PSI, while higher readings can place added stress on pipes, fixtures, water heaters, washing machines, and dishwashers. Common warning signs include banging pipes, water spitting from faucets, running toilets, leaks, and unusually high water bills.

If your water pressure is above 80 PSI or changes suddenly, a licensed plumber can inspect your plumbing system and determine whether the pressure regulator needs to be adjusted or replaced. Addressing the problem promptly can help prevent water waste, premature appliance wear, leaks, and more extensive plumbing repairs.

 

Symptoms of High Water Pressure in a House

The easiest way to find out if you have high water pressure in your house is simply by observing it when it happens. Common signs you may notice include:

  • Water hammer (banging in your pipes)

  • Water spitting from faucet aerators when the faucet is turned on

  • Shortened lifespan of water heaters, washing machines, and dishwashers

  • Running toilets

These symptoms of high water pressure in a house indicate that your plumbing system is under stress, which can result in needing costly repairs and replacements if not addressed promptly. If you notice any of these signs, it’s crucial to protect your home’s plumbing.

How to Test Your Water Pressure (PSI)

If you’re still not sure if your water pressure is abnormal, buy a pressure gauge and screw it onto a faucet near your water meter. A water pressure gauge helps you determine the PSI (pounds per square inch) of your water pressure.

Here’s a quick guide on how to test your water pressure:

  • Turn off all water-using appliances and fixtures.

  • Attach the pressure gauge to an outside faucet or a faucet near your water meter.

  • Turn the faucet on fully and read the gauge.

Ideally, water pressure should be between 40 and 60 PSI. If the reading exceeds that range, it’s time to take action. For professional help in New Jersey, call A.J. Perri at (732) 733-2541.

Home Water Pressure Guide

Water pressure reading

What it means

Recommended next step

Below 40 PSI

Your home’s water pressure may be lower than expected.

Check for closed valves, leaks, supply issues, or other restrictions.

40–60 PSI

This is a common target range for residential water pressure.

No action is usually needed if the pressure is stable and you are not experiencing plumbing problems.

61–80 PSI

The pressure is higher than the typical target range.

Test it again at another time. Schedule an inspection if you notice leaks, banging pipes, running toilets, or pressure fluctuations.

Above 80 PSI

Your household water pressure is too high.

Have a licensed plumber inspect the pressure regulator and determine whether it needs to be adjusted or replaced.

 

A single reading does not always tell the full story because municipal water pressure can fluctuate throughout the day. If possible, test your pressure at different times or use a gauge with a maximum-reading indicator to identify temporary pressure spikes.

What Happens If Water Pressure in Your House Is Too High?

Excessive water pressure places ongoing stress on your home’s plumbing system. Over time, it can contribute to leaking pipes, damaged fixtures, running toilets, and premature wear on appliances such as washing machines, dishwashers, and water heaters. It may also increase water waste and raise your utility bills. Addressing high water pressure early can help prevent more extensive plumbing damage and avoid unnecessary repairs.

Is High Water Pressure an Emergency?

High water pressure is not always an immediate plumbing emergency, but it should be addressed promptly. If you have an active leak, a burst pipe, or visible water damage, shut off the main water supply if it is safe to do so and call for emergency plumbing service.

If there is no active leak, schedule an inspection before the added pressure causes further wear on your plumbing and appliances.

 

What Causes High Water Pressure in a House?

Several factors can contribute to high water pressure in a house. Understanding these causes can help you diagnose and address the issues more effectively:

1. Broken Pressure Regulator

A pressure regulator controls the water pressure entering your home. If it malfunctions, it can fail to regulate pressure, causing the pressure to rise to dangerous levels and putting stress on your home’s plumbing system and appliances.

2. Temperature Changes

Seasonal temperature variations can affect water pressure. Colder weather can cause water to contract, increasing pressure, while warmer water can cause expansion, also affecting pressure levels.

3. Municipal Water Supply Fluctuations

The pressure from the municipal water supply can fluctuate due to maintenance work or changes in demand. These fluctuations can impact the water pressure in your home, making it essential to have a water pressure regulator to maintain consistency.

4. High Municipal Water Pressure

Your water company may keep the water pressure high in your town to meet the needs of fire hydrants and tall buildings. This high pressure can directly affect the water pressure inside your home.

5. Living at the Bottom of a Hill

Living at the bottom of a hill can naturally cause high water pressure because water runs downhill, after all. This is one of the most common causes of high water pressure in homes situated in lower elevations.

6. Thermal Expansion

Thermal expansion inside your home occurs due to water volume changes from your water heater heating up. If not properly managed, this can increase pressure within your plumbing system.

Why Is My Water Pressure So High All of a Sudden?

Sudden increases in water pressure can be alarming. A sudden increase can be due to a broken pressure regulator or a change in the municipal water supply. Additionally, temperature changes or a burst pipe could cause sudden spikes. If your water pressure increases unexpectedly, it’s essential to investigate as soon as possible.

Can a Bad Water Heater Cause High Water Pressure?

A bad water heater can contribute to high water pressure in a house. Thermal expansion occurs when water is heated, increasing the volume and pressure inside your plumbing system. If your water heater’s expansion tank is malfunctioning, this can lead to excessive pressure. Your local plumber offers professional help to ensure the water pressure in your home isn’t too high or too low.

How Do I Fix High Water Pressure in My House?

A plumbing repair is not something most people are qualified to tackle on their own. The best thing you can do is contact a professional plumber. A professional plumber will help diagnose your water pressure problem and provide the right solution for your home.

Water pressure in a home can be adjusted. Oftentimes, installing a pressure regulator on your main water line is all your plumber will need to do to fix the problem. A pressure regulator is a common solution and can be installed on the main water line to maintain optimal pressure levels. A professional plumber can assess your system and install or adjust the pressure regulator as needed. For expert assistance, schedule a service with A.J. Perri.

Schedule a Professional Water Pressure Inspection Today

At A.J. Perri, our licensed plumbers are experts in diagnosing and fixing high water pressure in houses. We offer special deals and guarantees on our services, ensuring you get the best value and peace of mind while safeguarding your property. Financing options are available to make necessary repairs more affordable.

Don’t let high water pressure damage your home or appliances. Contact us today to schedule a professional inspection and take advantage of our exceptional services. Call (732) 733-2541 or schedule a service online to ensure your home’s plumbing system functions safely and efficiently.

 

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