Whole-house or one fixture, city water or a private well. We find the actual cause before quoting a fix, so you're not paying to replace a part that was working fine.
We'll follow up within one business day. No pressure, no upsells.
If you need a plumber for low water pressure in Montgomery County, your shower has gone weak, the washer takes forever to fill, or the whole house lost pressure overnight, and you reach the Holdsy Plumbing team directly at (301) 834-2944. Low pressure has maybe six real causes and they don't share a fix, so the whole job is telling them apart: a failing pressure reducing valve, a waterlogged well tank, a half-closed shutoff left over from other work, decades of scale inside old galvanized pipe, or a supply issue out on the WSSC main. Owner-operated means Chase runs a gauge on the line and isolates the cause before anyone quotes you a part. You'll know what it is and what it costs before we pick up a wrench.
Here's what most companies skip on a pressure call. The single most common mistake is replacing the visible part, a valve, a fixture, a section of pipe, without first proving that part is the problem. Pressure is a system, and a reading of 40 PSI at a hose bib next to the meter versus 20 PSI at an upstairs bathroom tells you two completely different stories. One points at the street or the PRV; the other points at a restriction inside the house. We take the reading first.
Plumber checking water supply line pressure in a Montgomery County home
Low water pressure in a house is a symptom, and the first job is deciding whether the whole house is low or just one fixture, because that split rules out half the causes immediately. A normal residential supply runs roughly 40 to 60 PSI. We put a gauge on an outdoor hose bib near the meter to see what the street is actually delivering, then compare that to pressure at the far end of the house. If the reading at the meter is healthy but drops off upstairs or at the kitchen, the restriction is inside your plumbing. If it's low right at the meter, the cause is your PRV or the WSSC supply.
That one measurement saves you money, because it stops the job from becoming a parts-swapping guessing game. Not sure where to even put a gauge? Describe what you're seeing at (301) 834-2944 and we'll tell you whether it's a call-now problem or something that can wait for a scheduled visit.
Plumber checking water supply line pressure in a Montgomery County home
When water pressure dropped whole house and it happened suddenly, the cause is usually one of three things, and you can narrow it down before we even arrive. A gradual whole-house decline over months points at a scaling PRV or corroding pipe. A sudden overnight drop points at a PRV that finally gave out, a shutoff that got bumped, or a supply issue on the street.
"A sudden whole-house pressure drop is the PRV, a shutoff, or the street. A slow one over months is scale in the pipe or a tired PRV. Knowing which you have tells us where to look first."
Check two things before you call. First, is the main shutoff, usually where the water enters the house or at the meter, fully open? A valve nudged during other work is the number-one false alarm. Second, is it truly whole-house, or is it worst at the fixtures farthest from the meter? If the far fixtures are the weakest, you likely have a restriction building inside the pipe rather than a supply problem. Call (301) 834-2944 and we'll walk the rest with you.
Corroded supply pipe that restricts water pressure in an older Gaithersburg home
A pressure reducing valve replacement is the fix when the PRV is proven to be the cause, not when it's simply the most convenient part to swap. The PRV sits where WSSC water enters the house and steps the street pressure, which can run high on some Montgomery County lines, down to a safe 50 to 60 PSI for your fixtures. Over 8 to 12 years the internal seat and spring wear, and the valve either chokes pressure down too far or stops regulating and lets it climb.
We confirm the diagnosis by reading pressure before and after the valve with a gauge, which shows directly whether the PRV is the restriction. When it is, replacement is a contained job: isolate the supply, swap the valve, set the outlet pressure, and confirm the reading across the house. When the PRV tests fine, we keep looking rather than sell you a valve you didn't need. That diagnosis-first habit is how Chase runs every job. Ready to get it read? Call (301) 834-2944.
Plumber checking water supply line pressure in a Montgomery County home
Not every pressure complaint is a service call, and a straight answer here is worth more than a ticket. If only one fixture is weak and the rest of the house is fine, start there before you call anyone. A single slow faucet is almost always a clogged aerator, the little screen on the spout, or a sediment-blocked cartridge, and both are a ten-minute fix with a wrench and some vinegar. A single weak showerhead is usually just mineral scale in the head. Those are DIY jobs, not a reason to pay for a truck.
Here's the line. If it's whole-house, if it came on suddenly, if more than one fixture is weak, or if you've already cleaned the aerator and it's still poor, that's when the cause is upstream in your PRV, your pipe, your tank, or the supply, and that's when a gauge and a plumber earn their keep. Describe it at (301) 834-2944 and half the time we can tell you on the phone whether it's a vinegar-soak fix or a scheduled visit.
Tell the Holdsy Plumbing team what you're seeing at (301) 834-2944: whole-house or one fixture, sudden or gradual, city water or a well. Most of the time we can point at the likely cause on the phone and book a same-week visit. For non-urgent work, request a free estimate through the contact form.
Call now (301) 834-2944 