You turn on the shower and instead of a strong stream, you get a trickle. The kitchen faucet fills a pot so slowly you forget about it. Or you notice the upstairs bathroom has always felt weak but it's getting worse. Low water pressure is one of the most common plumbing complaints we hear from High Point homeowners — and it almost always has a clear, fixable cause once you know where to look.
As expert plumbers serving High Point and Guilford County, we've diagnosed hundreds of low-pressure calls across every era of home in this city, from century-old houses in Emerywood to mid-century slab homes in Westchester to newer construction out toward Adams Farm. The cause depends heavily on your home's age and pipe material — and we'll walk through exactly how to figure out which situation you're in.
The Short Answer: Four Things Cause Most Low Water Pressure in High Point
Before going section by section, here's the diagnostic overview. Low water pressure in a High Point home is almost always caused by one of four things:
- A clogged aerator or showerhead — mineral buildup blocking the screen at the tip of the faucet (single fixture only)
- A failing pressure reducing valve (PRV) — the device that regulates pressure from the city main into your home
- Corroded galvanized steel supply pipes — the most common cause in older High Point homes, and the one that can only be fixed by repiping
- Low pressure from the city supply — a utility issue, not a plumbing issue, though a booster pump can help
Each of these requires a different fix. Here's how to tell them apart.
Low Pressure at Just One Faucet? Start With the Aerator
If the problem is isolated to a single faucet — pressure is fine everywhere else but weak at one specific fixture — the aerator is your first stop. The aerator is the small screen-and-flow-regulator assembly threaded onto the tip of the faucet spout. It can be unscrewed by hand or with a cloth for grip.
Over time, mineral deposits from your water supply coat and clog the aerator screen. This is especially common in High Point homes because the water supply carries moderate mineral content. A faucet that once flowed at full strength can drop to a frustrating dribble as the aerator clogs without anyone noticing the gradual change.
The fix: Unscrew the aerator, rinse it under running water, use an old toothbrush to scrub away the buildup, then reattach. If the buildup is severe, soak it in white vinegar for 30 minutes first. If pressure returns to normal, you're done.
If cleaning the aerator doesn't help, check the supply stop valve under the sink — the small shutoff handle connected to the supply line feeding the faucet. These valves can be partially closed accidentally during under-sink work and never reopened fully. A kinked supply line (the braided flexible hose connecting the stop valve to the faucet) can also restrict flow to a single fixture.
A failed faucet cartridge can also mimic low pressure at a single fixture, particularly in older single-handle faucets. If aerator cleaning and valve checks don't resolve it, cartridge replacement is the next step.
Whole-House Low Pressure? Check the Pressure Reducing Valve First
If pressure is low at every fixture throughout the home — not just one — you're dealing with a whole-house issue. The first thing to check is the pressure reducing valve, or PRV.
The PRV is a bell-shaped valve installed on the main water supply line where it enters the house, typically near the water meter or in a crawl space or utility area. Its job is to reduce the city's supply pressure (which can run 80–150 PSI) down to a safe residential range of 40–80 PSI. Without a PRV, that high incoming pressure would hammer your fixtures and shorten the life of every appliance connected to your water supply.
PRVs have a lifespan of roughly 10–15 years. When they fail — and they fail gradually, not all at once — they often stick in a partially closed position, restricting flow and dropping pressure throughout the house. Other signs of a failing PRV include pressure that fluctuates throughout the day, or pressure that used to be fine and has slowly declined over the past year or two.
How to check: Use a water pressure gauge (available at any hardware store for around $10) threaded onto a hose bib or laundry connection. With nothing else running, the reading should be between 45 and 75 PSI. A reading below 40 PSI in a home with a PRV suggests the valve needs adjustment or replacement. PRV replacement is a straightforward job for a plumber and typically resolves whole-house pressure complaints immediately.
If your home was built before the 1980s, it may not have a PRV at all — they weren't universally required in older construction. In that case, the pressure at your fixtures is whatever the city's main delivers to your street, which may or may not be adequate depending on your neighborhood's distribution system.
Older High Point Home? Your Galvanized Pipes May Be the Real Problem
This is the one homeowners in older High Point neighborhoods most need to hear: if your home was built before 1970 and still has its original supply piping, low water pressure may not be fixable without repiping.
Here's why. Galvanized steel pipe — the standard supply line material through the mid-20th century — corrodes from the inside out. Over 40–50 years of use, mineral deposits and rust accumulate on the interior pipe walls. A 3/4-inch supply pipe that once flowed freely can have an effective interior diameter of 1/4 to 3/8 of an inch after decades of buildup. No pressure adjustment, no valve replacement, and no aerator cleaning fixes that. The pipe itself has become the restriction.
Homes in High Point's older neighborhoods — Emerywood, Sherwood Forest, the streets along Main Street and Kivett Drive, and many of the post-war subdivisions built between 1945 and 1960 — are the most likely to have this problem. If your home has galvanized pipes, you've probably noticed the pressure has gotten worse over time rather than dropping suddenly. That's the corrosion pattern: slow, steady, and progressive.
Additional signs that galvanized pipe is your pressure culprit:
- Brown or rust-tinted water, especially after a period of non-use
- Lower pressure at fixtures farther from the water meter than those close to it
- Pressure that has declined noticeably over the past 5–10 years
- Visible rust on exposed pipe sections in the crawl space or basement
The only permanent fix is repiping with modern materials — copper or PEX. Whole-house repiping in High Point typically takes one to two days for a standard-sized home. It's a meaningful investment, but it permanently solves both the pressure and water quality issues that galvanized pipe creates.
Could the Problem Be with High Point's City Water Supply?
Sometimes low water pressure isn't a plumbing problem at all — it's a water supply problem. High Point water is provided by High Point Water Resources (contact: 336-883-3111). The utility owns and maintains everything from the water main to the meter. Homeowners own and are responsible for everything from the meter to the house — the supply line, all interior piping, and every fixture.
If pressure is low at the meter itself, the issue is on the utility's side, and a call to High Point Water Resources is the right move before calling a plumber.
There's also a geographic factor specific to High Point: homes in higher-elevation areas of northwest High Point can experience genuinely lower municipal pressure due to how the city's water distribution system works. Water pressure decreases as elevation increases, and parts of High Point sit high enough on the local terrain that the pressure differential is noticeable compared to lower-lying neighborhoods. If you live in one of these higher areas and have always had mediocre pressure, a booster pump system — installed on the main supply line — can be a permanent and practical solution.
How to rule out a utility issue: Use the pressure gauge method described above. Check at a hose bib early in the morning before peak household demand. If pressure reads below 40 PSI at the meter or the first connection inside the house, and you have no PRV or the PRV is functioning correctly, contact High Point Water Resources to report the issue and ask about pressure in your distribution zone.
How to Check Your Home's Water Pressure Right Now
You don't need a plumber to get your first reading. Here's how to do it yourself:
- Buy a water pressure gauge at any hardware store — they cost $8–$15 and have a standard hose thread fitting.
- Attach it to an outdoor hose bib or a laundry machine connection. Make sure no other water is running in the house.
- Turn the bib fully open and read the gauge.
- Normal residential pressure is 40–80 PSI. The sweet spot most plumbers target is 50–65 PSI.
- Below 40 PSI: you likely have a PRV issue, a supply problem, or galvanized pipe restriction.
- Above 80 PSI: your PRV may be set too high or failing in the other direction — high pressure causes its own problems, including accelerated wear on fixture valves and appliances.
This two-minute check tells you a lot and helps any plumber you call give you faster, more accurate information when you describe the problem.
When to Call a Plumber for Low Water Pressure
Some low-pressure issues are genuinely DIY-friendly — cleaning an aerator, checking a stop valve, or testing with a pressure gauge. Others require a plumber:
Call a plumber when:
- Whole-house pressure is below 40 PSI and cleaning aerators doesn't help
- You have a PRV that's more than 10 years old and pressure has dropped gradually
- Your home was built before 1970 and you've never had the supply pipes evaluated
- You have brown or rust-colored water alongside low pressure — a sign of advanced galvanized corrosion
- Pressure is adequate at some fixtures but significantly lower at others far from the meter, suggesting partial blockage in a supply branch
- You've addressed everything else and pressure is still inadequate
Whole-house low pressure in an older High Point home almost always traces back to the PRV, the galvanized supply piping, or both. A diagnostic visit by a plumber will identify which one — and give you a clear picture of what the fix involves before any work begins.
Frequently Asked Questions About Low Water Pressure in High Point
How do I know if my low water pressure is caused by my pipes or by the city supply?
Use a pressure gauge at a hose bib right where the supply enters your house. If pressure is already low at that first connection — before water travels through any interior piping — the issue is likely with the city supply or your PRV. If pressure is adequate at that point but drops further into the house, corroded or restricted interior piping is the more likely cause. High Point Water Resources can tell you the nominal pressure in your distribution zone if you call and ask.
Will cleaning my aerators fix my whole-house low pressure?
No. Aerator cleaning only addresses low pressure at individual fixtures where the aerator is clogged. If pressure is weak at every fixture in the house, the cause is upstream — at the PRV, in the supply piping, or at the city connection. Aerator cleaning is a good first step for a single-faucet problem, but it won't change whole-house pressure.
How long does a pressure reducing valve last, and what does replacement cost?
PRVs typically last 10–15 years before they start to fail. Replacement costs in High Point generally run $200–$450 installed, depending on the valve size and accessibility. If your PRV is original to a home built in the 1990s or early 2000s, it's at or past expected lifespan and worth evaluating.
My home in Emerywood has always had low pressure. Could it be the pipes?
Almost certainly yes, if the home retains original piping. Emerywood's housing stock is predominantly pre-WWII to early post-war construction, making it one of the High Point neighborhoods most likely to still have galvanized steel supply lines. The combination of the pipes' age and interior corrosion buildup is the most common cause of chronic whole-house low pressure in that area. A plumber can inspect visible pipe sections in the crawl space and give you an honest assessment of the pipe condition.
Is a booster pump a good solution for low water pressure in High Point?
It depends on the cause. A booster pump is a good permanent solution when the problem is genuinely low pressure from the city supply — particularly in higher-elevation areas of northwest High Point where municipal distribution pressure is inherently lower. It is not a good solution when the cause is galvanized pipe restriction, because boosting pressure behind a corroded pipe pushes water harder through a narrower passage without fixing the underlying problem. Diagnose first, then decide whether a booster makes sense.
What's the difference between low water pressure and low water flow?
Pressure and flow are related but not the same. Pressure is the force behind the water (measured in PSI). Flow is the volume of water moving through the pipe per minute (measured in GPM). A clogged aerator reduces flow at the faucet while leaving pressure technically unchanged in the supply line behind it. A failing PRV reduces pressure, which in turn reduces flow at fixtures. In practical terms for homeowners, the symptoms can feel similar — weak output at the faucet — but the causes and fixes are different.
Dealing With Low Water Pressure in High Point? We Can Help.
Low water pressure has a cause, and in most cases it's fixable — sometimes in minutes, sometimes with a larger repair, but always with a clear answer after a proper diagnostic. If you're dealing with weak pressure throughout your home or at specific fixtures and cleaning the aerators hasn't helped, give us a call.
We serve High Point, Archdale, Jamestown, Trinity, and the surrounding Guilford County area. Call us today at 336-422-7560 and we'll get to the bottom of it.
