When it comes to plumbing, most homeowners know that low water pressure is a sign something’s off. But what many don’t realize is that high water pressure can be just as problematic—and often more damaging in the long run.
Water pressure that’s too low is inconvenient. Water pressure that’s too high? It can quietly ruin your plumbing system.
What Is “Normal” Water Pressure?
In most homes, water pressure between 40 and 60 psi (pounds per square inch) is considered ideal. Anything below 40 psi can lead to weak water flow and performance issues. But when pressure climbs above 80 psi, you’re in the danger zone—and that can lead to serious wear and tear across your entire plumbing system.
Signs Your Water Pressure Might Be Too High
Most homeowners won’t notice high water pressure right away, but the symptoms often show up over time:
- Banging pipes or noisy plumbing (also known as “water hammer”)
- Leaks from faucets, toilets, or supply lines
- Shortened lifespan of appliances like dishwashers, water heaters, and washing machines
- Sudden bursts of water when turning on a tap
- Increased utility bills from unnoticed water loss
If you’ve replaced fixtures more often than expected—or you’re suddenly dealing with repeated leaks—excessive pressure could be the culprit.
Why High Water Pressure Is a Problem
Water pressure that’s too strong may feel great in the shower, but it puts significant strain on valves, joints, and internal appliance components. Over time, that leads to:
- Premature fixture failures
- Pipe damage and hidden leaks
- Increased risk of flooding from burst pipes
- Higher water usage and costs
High pressure also worsens any weak spots in your plumbing system—meaning a small issue can quickly turn into an expensive emergency.
What About Low Water Pressure?
Of course, low water pressure isn’t ideal either. It can make everyday tasks frustrating and often signals deeper issues within your plumbing system. Mineral buildup inside pipes can narrow water flow, while corrosion—especially in older homes—can further restrict pressure and lead to inefficiencies. Sometimes, the problem stems from a failing pressure regulator that’s no longer maintaining consistent output. In other cases, hidden leaks may be quietly reducing system performance without any obvious signs.
Still, while low pressure is inconvenient and noticeable, it generally causes less long-term damage than excessive pressure—making high pressure the more dangerous issue in disguise.
How a Licensed Plumber Can Help
If you suspect your water pressure is off—whether too high or too low—it’s best not to rely on guesswork. A licensed plumber can quickly test the pressure using a gauge at your outdoor spigot or near the water main to assess how your system is performing.
When pressure levels exceed safe limits, a few key solutions can help. Installing a pressure-reducing valve (PRV) is often the first step to regulate flow throughout the home. In some cases, older pressure regulators may need to be replaced or upgraded. If vulnerable supply lines are contributing to spikes or inconsistencies, a thorough inspection and targeted reinforcement can make a big difference. For homes experiencing inconsistent pressure across zones, a system-wide pressure analysis may also be necessary.
These are relatively straightforward fixes—but if left unaddressed, high pressure can lead to expensive damage and system failures over time.
Want to learn more about common misconceptions that could be impacting your plumbing system? Check out our blog on plumbing myths that could be costing you.
A Balanced System Is a Healthy System
In the world of plumbing, balance matters. Too little water pressure makes your system sluggish and inefficient. Too much can quietly destroy fixtures, shorten appliance life, and increase the risk of leaks or bursts.
If you’re unsure where your system stands, now’s the time to get ahead of it.
A. Borrelli Mechanical has been helping homeowners across the Northeast maintain safer, more efficient plumbing systems for decades. Contact us today to schedule a pressure check and make sure your home’s plumbing is performing exactly as it should.
