I get it, high water pressure feels like a luxury. A strong shower. A faucet that fills a pot fast. A dishwasher that finishes its cycle with force. Most homeowners assume more pressure is better, and I used to think the same thing before I started seeing what it does to a house over time. It feels like proof of strong plumbing and a well-built home.
It’s also slowly destroying your plumbing.
Not all at once. It happens steadily, in every part of the house that uses water. Toilets that run every so often. Faucets that start dripping just a few months after a new cartridge. Dishwashers that fail at the inlet valve (the part that lets water in). Washing machine hoses that burst without warning. I’ve replaced the same part twice for the same customer before anyone connected the dots. A large share of these repairs are caused by high pressure. The homeowner replaces the part, it fails again, and nobody connects the failure to the 90 PSI banging through the pipes every time a faucet turns on.
What’s Actually Happening at High Pressure
Water pressure is simply how hard water is being pushed through your pipes, and it’s one of the first things I check when a service call doesn’t quite add up. At 45–65 PSI, the recommended range for a home, water flows well from every fixture and the parts that control it work the way they were built to. At 80 PSI or higher, every part in the system is working harder than it was built for.
Think of it like tire pressure. Putting 50 PSI in a tire rated for 35 PSI doesn’t blow it out right away. But it wears the tire faster, stresses the sidewalls, runs hotter, and makes the ride feel firm while the tire wears out ahead of schedule. Water pressure works the same way on plumbing parts: above the level they’re built for, everything wears out faster.
Pressure spikes in the pipes: When a faucet or toilet valve closes quickly, a pressure wave slams through the pipes. Plumbers call this water hammer. The higher the baseline pressure, the harder that slam hits. At 90+ PSI, water hammer is strong enough to hear (the banging or thumping sound some homes have), and it slowly stresses every pipe joint, fitting, and valve body in the system.
Constant stress on valve seats: Every valve in the house, toilet fill valves, faucet cartridges, dishwasher inlet valves, washing machine inlet valves, refrigerator ice maker valves, has a rubber or ceramic seat (the part that seals it shut) that pressure is constantly pushing against. At recommended pressure, the seat holds up for its expected lifespan. At high pressure, it gets pushed harder and wears out sooner.
What High Pressure Actually Damages
Toilet fill valves: The fill valve lets water back into the tank after you flush, and it’s usually the first thing I check when someone tells me a toilet won’t stop running. It’s a plastic and rubber part built for normal household pressure. At 80 PSI or higher, fill valves fail more often. That shows up as a toilet that runs on its own, a phantom flush (the toilet refills briefly even though no one used it), and a fill valve that needs replacing every year or two instead of every five to seven years. Colorado Springs city water is soft to moderately hard, about 1.3 to 2.8 grains per gallon (a measure of dissolved minerals), so mineral buildup usually isn’t the main cause here. Homes on a private well, common in Black Forest, Falcon, Monument, and other rural parts of El Paso County, often have genuinely hard water that coats toilet parts in mineral buildup. On those wells, add high pressure on top of that, and fill valves fail even faster.
Dishwasher inlet valves: The dishwasher inlet valve is an electric valve (it opens using a small electric coil called a solenoid) that lets water into the dishwasher when it fills. It’s one of the most pressure-sensitive parts in the house. Most dishwasher problems that look like “won’t fill” or “leaking from the back” trace back to a failed inlet valve. Dishwasher makers list an operating pressure range, usually 20 to 120 PSI, but running near the top of that range for years wears the valve out much faster. If you’ve replaced a dishwasher inlet valve more than once, check your pressure.
Washing machine hoses: Standard rubber washing machine hoses have a well-known history of bursting and causing floods. Higher pressure makes them fail more often, and the result is bad: a burst hose keeps running with no automatic shutoff, flooding the laundry room and possibly the floor below it. Braided stainless steel hoses cut this risk sharply, and every home should have them no matter what the water pressure is. If your pressure stays above 80 PSI, an automatic shutoff valve for the washing machine is worth adding. It closes the water supply whenever the machine isn’t running.
Faucet cartridges: Every dripping faucet has a worn-out cartridge or valve seat inside it. On a private well, common in Black Forest, Falcon, and Monument, hard water can speed up that wear by leaving mineral buildup on the parts. High pressure pushes on the cartridge seat even harder, making that damage worse. Colorado Springs city water is only soft to moderately hard, so on city water, high pressure is usually the bigger factor. If you’re replacing faucet cartridges every year or two, check your pressure first.
Water heater: The water heater has a temperature and pressure relief valve, called a T&P valve, built to open if the pressure or temperature inside the tank gets too high. Constant high supply pressure can make the T&P valve weep (leak slowly) or open and close on its own to release pressure. That’s a sign the system is working harder than it should. If the valve keeps weeping, its seal wears out from opening and closing so often. Eventually it will leak even at normal pressure and will need to be replaced.
Pipe joints and fittings: Over the years, constant high pressure stresses every soldered joint, threaded connection, and push-fit fitting (connectors like SharkBite that snap on without solder or threads) in the system. This kind of damage shows up slowly. It won’t cause a leak in a year, but over many years it adds to pinhole leaks in copper pipe and joint failures in older plumbing.
Checking Your Pressure
A pressure gauge with a hose bib adapter costs $10–$15 at any hardware store, and it’s the cheapest diagnostic tool I own. The process:
- Thread the gauge onto an outdoor hose bib.
- Turn the water fully on and read the gauge.
- Note the reading. Test at different times of day. Municipal pressure varies through the day, and it’s typically highest late at night when demand is lowest.
Under 65 PSI: Normal. No action needed. 65–80 PSI: Higher than ideal, but still within code. Consider a PRV if you keep having valve failures. Over 80 PSI: A pressure reducing valve is required by code, and it’s a good idea anyway. Pressure this high is likely already damaging your fixtures.
The Pressure Reducing Valve
Most homes have a pressure reducing valve, or PRV: a bell-shaped device on the main water line, usually near where the line enters the house from the meter (I point it out on almost every plumbing walkthrough I do, and most homeowners have never noticed it’s there). The factory setting on a PRV delivers pressure in the 50–70 PSI range to the rest of the house.
PRVs last about 10 to 15 years. As they get older, they can drift away from their original setting, stop regulating pressure well, or fail completely stuck open. A PRV stuck open passes full city pressure straight into the house, no matter how high that pressure is. In Colorado Springs, that can mean 60–100+ PSI in some neighborhoods, depending on how far downhill the house sits from the water system’s distribution point.
PRV symptoms:
- Pressure above 80 PSI at hose bibs
- Water hammer sounds when fixtures are closed
- Repeated valve failures across multiple fixtures
- T&P valve on water heater weeping
PRV replacement: A licensed plumber should handle PRV replacement. It means shutting off the main water supply and working on the main line into the house. Cost in Colorado Springs: $200–$500 for the valve and labor. If your PRV has failed or your house never had one, this is one of the best plumbing investments you can make. It protects every fixture and appliance in the house at once.
PRV adjustment: A PRV that still works but has drifted from its setting can sometimes be adjusted instead of replaced. The adjustment screw sits under the locknut (the nut that locks the setting in place) at the top of the PRV. Turning the screw clockwise raises the pressure in the house; turning it counterclockwise lowers it. Make small adjustments and check the gauge after each one. If turning the screw doesn’t change your pressure at all, the valve has failed and needs to be replaced.
The Appliance Warranty Implication
Many appliance manufacturers list a maximum operating pressure right in their installation instructions, buried in the fine print nobody reads until a warranty claim gets denied. For dishwashers, washing machines, and refrigerator ice makers, that maximum is commonly up to 120 PSI, though it varies by brand and model. Colorado Springs code already requires household pressure to stay at or below 80 PSI, so a home in compliance should never expose an appliance to its rated maximum in the first place. Running an appliance above whatever maximum its manual specifies can void the warranty on water-related parts, especially the inlet valve.
If you’ve filed a warranty claim for a dishwasher or washing machine and it was denied, operating pressure may have been the reason. More to the point: if you’ve replaced the same inlet valve twice in two years, replacing it a third time without fixing the pressure will just lead to the same failure again.
The Colorado Springs Context
Colorado Springs and the surrounding Front Range area cover a wide range of elevations, and I’ve seen that change water pressure from one job to the next just a few streets apart. Homes lower down get higher pressure, because pressure builds as water drops in elevation on its way from the water system’s tanks and reservoirs. A neighborhood sitting well below those reservoirs can have noticeably higher pressure than a neighborhood up higher.
This varies block by block, and the only way to know for sure is to measure it. If you’re in a lower-elevation area, parts of Fountain, lower Widefield, or the lower parts of the Colorado Springs basin, checking your pressure is especially worth doing.
Water hardness makes the pressure problem worse for some homes, but not all. Colorado Springs city water, from Colorado Springs Utilities, is soft to moderately hard, about 1.3 to 2.8 grains per gallon, so mineral buildup usually isn’t a major factor on city water. Homes on a private well, common in Black Forest, Falcon, Monument, and other rural parts of El Paso County, often have genuinely hard water, and minerals build up on every valve seat and cartridge in the system. Combine that with high pressure, and parts on well water fail even faster: the pressure keeps pushing on valve seats that are already being worn down by mineral buildup. Installing a PRV in a well-water home with high pressure noticeably extends the life of every fixture and appliance in the house.
Spend the $15 on the gauge. Know your pressure. If you need a PRV, it’s one of the best investments you can make in the plumbing system, and in my experience it pays for itself in repairs you never have to make.
For a free estimate on PRV installation or plumbing assessment in Colorado Springs, call (719) 243-9718.
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