Low Water Pressure Solutions That Start With a Gauge
Our low water pressure solutions start with a number, not a guess: we put a gauge on your system, read the pressure, and work back to what is choking the flow. It might be a clogged aerator, a failing pressure regulator, a hidden leak, or old pipe that has closed up from the inside. You hear the cause and the price before any work starts.
Low pressure is a symptom. Here is what causes it.
Weak flow is the problem you feel, but something else is causing it. Finding that cause is the whole job, and it is part of the everyday work our plumbing services crews do. Fix the real cause and the pressure comes back on its own.
Clogged aerator or cartridge
Weak flow at one sink or shower usually means scale in the aerator, the shower head, or a worn cartridge inside the valve.
A valve that is not fully open
A main shutoff or fixture stop that was left partly closed, or one that has failed inside, can cut flow a lot without anyone noticing.
A failing pressure regulator
The regulator where the water line enters the house can wear out and drop pressure to the whole home, or let it swing high and low.
A hidden leak
A leak inside a wall, under the slab, or on the main line bleeds off water before it reaches your taps.
Leak detectionNarrowed galvanized pipe
Galvanized steel rusts and scales from the inside. After enough years, a pipe that started wide can be half closed.
Repiping servicesWater heater problems
If only the hot side is weak, look at the heater: a partly closed valve, sediment in the tank, or a failing part inside it.
Where is the pressure low?
Where and when the pressure drops narrows the cause down fast. Pick the pattern that matches your home to see what is most likely behind it, what we check, and the fix it usually needs.
One fixture only
A clogged aerator, a scaled-up shower head, or a worn cartridge at that one fixture.
Flow with the aerator off, the cartridge, and the shutoff valve under that fixture.
Clean or replace the aerator or cartridge, or replace a stuck shutoff.
Hot side only
Something at or near the water heater: a partly closed valve, sediment in the tank, or a failing part inside it.
The valve on the heater, the age of the tank and how much sediment it holds, and the hot pipe near the heater.
Open or replace the valve, flush the tank, or repair the heater.
Whole house
The main shutoff, the pressure regulator, a leak on the main line, or low supply from the street.
A gauge reading at a hose bib, the main valve, the regulator, and the meter with every fixture off.
Open or replace the main valve, replace the regulator, or repair the leak.
Sudden drop
A new leak, a valve someone closed, a regulator that failed, or work by your water supplier.
The meter for hidden flow, the regulator, any valve that was touched lately, and whether neighbors lost pressure too.
Repair the leak or the valve, or replace the regulator. If it is the supplier's side, we tell you who to call.
Slowly worse over years
Old galvanized pipe closing up with rust and scale, or a regulator that is wearing out.
The pipe material, flow at several fixtures, and the regulator reading.
Replace the worst sections of pipe, or repipe the house if the pipe is failing everywhere.
Test, isolate, then fix
We do not start by replacing parts and hoping. Every visit follows the same order, so you pay for the fix that brings the pressure back.
What changes the cost of fixing low pressure
Because we test first, the price is for the real cause, not a guess. These are the things that move it, and you hear the price before any work starts.
Where the cause is
An aerator at the faucet is a quick fix. A valve in a wall, a leak under a slab, or a problem on the main line takes more work.
Access
Pipe behind finished walls, under a slab, or in a tight crawl space takes longer to reach than pipe in a garage.
What the fix needs
Adjusting or replacing a valve or regulator is a different job from repairing a section of pipe or repiping a house.
Pipe material and age
Old galvanized pipe that is failing in many places costs more to fix than one bad section of copper.
Size of the home
More fixtures and longer pipe runs mean more to test and, if needed, more to replace.
Whether a leak is involved
If a hidden leak is behind the drop, finding and repairing it is part of the job.
Hard water, old pipe, and salt air
Hard water is the norm in much of Ventura County. The minerals that leave spots on your glasses also build up in aerators, valve cartridges, and the bottom of the water heater, and a little at a time, flow drops.
Older homes across both counties often still have galvanized steel supply pipe. It rusts from the inside, so the pipe looks fine from outside while the opening gets smaller every year. When only one section is bad, pipe repair on that run is enough. When it is failing everywhere, repiping is the fix that lasts.
Near the coast, salt air corrodes outdoor valves and hose bibs, and a valve that will not open fully looks like a pressure problem.
Water pressure questions
What people ask us when the showers go weak.
Same day valve replacement. Fast, professional, and the job was done right the first time.
Most homes fall somewhere between 40 and 80 PSI. Below about 40, showers feel weak and appliances fill slowly. Above 80, the plumbing code calls for a pressure regulator, because high pressure wears out valves, hoses, and fixtures.
Yes. A leak in a wall, under a slab, or on the main line bleeds off water before it reaches your faucets. If the water meter moves with every fixture off, there is a leak somewhere, and finding it is the first of our low water pressure solutions.
We do not recommend it. Turning the screw without a gauge can push pressure too high, and an old regulator may not hold a new setting at all. We read the pressure, then adjust or replace the regulator as needed.
We can tell whether the drop is on your property or before the meter. If it is on the supplier's side, we tell you who to call and what to tell them, so you are not paying for work on pipe that is not yours.
When cold is strong and hot is weak at the same faucet, the cause is on the hot side. It is often a partly closed valve at the water heater, sediment in the tank, or old pipe near the heater. In much of Ventura County, hard water speeds up that sediment, so low water pressure on the hot side often clears once the heater is flushed or the valve is replaced.
Tired of weak showers?
Call and tell us where the pressure is low and when it started. We will tell you what we need to test and give you the price before any work starts. Prefer to send details first? Use the form and we will call you back.