So, what causes low water pressure in a house? Clogged pipes, hidden leaks, partly closed shutoff valves, or a failing pressure regulator can all make your faucets run slowly. Work with plumbing experts to identify the cause of low water pressure and resolve the issue to improve fixture performance.
According to the Environmental Protection Agency, you need an incoming water pressure of 45 to 60 pounds per square inch (psi) in your home for your water fixtures to work well.
Low pressure can turn a simple morning routine into a stressful one. You may wait longer for your bath to fill or struggle to rinse dishes.
Perry Plumbing & Pipelining has served San Diego for more than 48 years. We provide local homeowners with access to an experienced team when they need water pressure solutions.
What Causes Low Water Pressure in a House?
Issues affecting your plumbing system or local water supply. When you resolve low water pressure, it can simplify your everyday tasks and help you avoid feeling frustrated.
Clogged Faucet Aerators
A faucet aerator is located at the end of your faucet and mixes air with water. Over time, dirt and small particles can build up inside the screen.
A clogged aerator will make one faucet have low pressure while every other fixture works normally. You’ll mostly notice such an issue after turning on a faucet you haven’t used in a while.
Clogged and Aging Pipes
Hard water can cause mineral deposits to build up in your pipes. These then narrow the opening and leave less room for water to move.
Corrosion also creates a similar problem. As your pipes age, their inner surfaces may become rough. Water will still reach your fixtures, but the flow will become noticeably weaker.
If your home has older piping, it may need a professional inspection. Here at Perry Plumbing & Pipelining, we offer camera inspections for faster plumbing troubleshooting. Our solutions allow you to see what’s happening inside your pipes instead of relying on guesswork.
We also offer trenchless pipe repair with NuFlow pipelining technology. It lets us restore certain existing pipes from the inside using an epoxy liner, which avoids major digging or demolition.
Partly Closed Shutoff Valve
If someone recently worked on your plumbing, they may have closed the shutoff valve and not fully reopened it. A partly closed valve will restrict flow throughout the house. You’ll experience a sudden pressure loss even though your city water supply hasn’t changed.
Check the valve if you know where it is and can safely access it. Avoid forcing an old or stuck valve to move, since it can break and cause a bigger problem. If the valve appears fully open and your pressure is still low, you might be dealing with another issue.
Faulty Pressure Regulator
Some homes have a pressure-regulating valve to control incoming water pressure. It helps prevent excessive force from damaging:
- Your fixtures
- Pipes
- Appliances that use water
A failing regulator will cause low or inconsistent water pressure. You might notice weak flow in the morning and stronger flow later in the day.
You may also hear unusual sounds from the plumbing. Our professional plumbers can help you inspect your regulator for signs of damage. They’ll then determine if you need to adjust it or get a new one.
Hidden Water Leak
A leak in your home can affect water flow, especially to nearby fixtures. You might notice other warning signs first, such as:
- An unexplained increase in your water bill
- Mold growth on walls or floors
- Sounds of running water when every fixture is off
- Mold or musty smells
- Wet areas in your yard
If your pressure changed quickly and you can’t find an obvious reason, don’t ignore the problem. Water damage can spread quickly and lead to additional repair costs. Solve home plumbing issues to protect your property and avoid costly repairs.
Problems With the Municipal Water Supply
A nearby water main repair or broken pipe might be affecting pressure in your neighborhood. Ask a neighbor whether they’ve noticed a similar issue.
If several nearby homes have weak water flow, you might be dealing with a municipal water supply issue. Contacting your local water provider helps you gather information about planned work or service issues.
Can Water Pressure Come Back on Its Own?
Sometimes yes. Low water pressure can sometimes return without a repair, especially when an outside supply issue caused the temporary drop.
If pressure keeps changing inside your home, look for a pattern. Does it happen at the same time each day? Does it start after someone uses a particular fixture?
Asking such questions helps you narrow down the cause. Consider reaching out to Perry Plumbing & Pipelining for a professional pipe inspection if the low water pressure is also accompanied by:
- A noticeable change in the color or clarity of your water
- A sudden change in water temperature while you shower
- Frequent need to reset or restart water-using appliances
Our experts have decades of experience handling common plumbing problems in San Diego. They’ll perform a thorough inspection to identify the cause and recommend a practical solution based on your home’s needs.
How Much Does Fixing Low Water Pressure in a House Cost?
It depends. A simple faucet blockage may require less work than repairing a damaged pipe hidden behind a wall. These factors influence the cost of fixing water pressure issues:
- The condition of your plumbing system
- Work needed to correct it
- The cost of the needed materials
Avoid choosing a repair based only on the lowest price. It might mean compromising on work quality.
At Perry Plumbing & Pipelining, we focus on customer satisfaction and train technicians to meet our service standards. We can also provide you with a detailed quote for the needed work to help you budget.
Can You Still Flush a Toilet With Low Water Pressure?
Usually, yes. However, the tank will take a bit longer to refill. Repeated weak pressure in your toilet often points to a larger plumbing issue.
For example, a clogged supply line might be limiting how quickly the tank refills. A faulty fill valve could also be restricting water flow.
If you’re dealing only with a slow refill, you probably won’t need to replace your toilet. However, if it’s a widespread issue, get a professional assessment to determine the right next steps.
Frequently Asked Questions
Does Low Water Pressure Affect Household Appliances?
Yes. Dishwashers, washing machines, and water heaters rely on a steady water supply to run properly. Low pressure may cause longer fill times. It also affects how well an appliance completes its cycle.
You may notice your washing machine taking longer to complete a cycle.
If several appliances and fixtures have weak flow, reach out to our plumbing professional. They’ll check whether your home’s water supply is affecting their performance. Addressing the issue early can help you avoid poor appliance performance.
Can a Water Softener Cause Low Water Pressure?
Yes. A water softener will reduce water flow when it has a blockage or another problem. Once water has trouble moving through the system, fixtures located after the softener will have weaker flow.
Our plumbing experts help homeowners address pressure issues related to their water softeners. They’ll inspect your unit for buildup or blockages. They may also recommend other solutions that better suit your home.
Will Installing New Pipes Solve a Water Pressure Problem?
It depends. Small inlet pipes may not provide enough flow for several fixtures to run at once, especially in a larger home. Older homes may also have plumbing layouts that weren’t designed for today’s water demands.
Replacing these may help address low water pressure if pipe size is the cause. Ask a plumbing professional to assess your pipe layout. They’ll determine whether pipe size is the reason you’re dealing with low water pressure and advise you accordingly.
Can a New Plumbing Fixture Change Water Pressure?
Absolutely. Modern faucets and showerheads often use flow restrictors to limit water use. After installing these, you might notice lower pressure than what you’re used to.
However, the fixture may only be reducing the flow rather than causing a problem with your home’s overall water pressure.
Why Does Low Water Pressure Affect Some Fixtures More Than Others?
Due to different designs and connections. Some fixtures may be more affected by low water flow because they have thinner pipes and screens.
The distance between a fixture and the main supply often matters, too. A fixture farther from the main supply will receive less water when another fixture is running.
Comparing several fixtures helps you spot a pattern and rule out some issues.
Address Low Water Pressure Issues With Professional Help
Knowing what causes low water pressure in a house allows you to act before a small issue leads to costly repairs. Check your fixtures for signs of damage and note any odd changes. Contact an experienced plumber if you have a leak or a recurring pressure issue.
Perry Plumbing & Pipelining has been offering plumbing services in the San Diego area since 1977. We have over 1,000 reviews from happy clients, reflecting our commitment to customer satisfaction. Trust our team to deliver a 5-star plumbing experience.
Contact us to schedule your service and access reliable water pressure solutions.
