Low Water Pressure? 5 Hidden Culprits in Your Home Plumbing System

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Clogged Faucet Aerators: A Quick DIY Fix

“Why is my water pressure low in the house?” Sometimes, the answer is as simple as a clogged faucet aerator. This small mesh screen at the tip of your faucet is designed to regulate water flow and reduce splashing. Over time, mineral deposits and debris can collect and block water from passing through freely.

Try this quick DIY check:

1. Unscrew the aerator from the faucet tip.
2. Soak it in a vinegar solution for 30 minutes to dissolve buildup.
3. Rinse it clean and reattach it.

If your water flow improves immediately, you’ve solved the problem yourself. In Texas, where hard water is common, cleaning your aerators every few months can prevent future blockages. But if you find that pressure issues persist across multiple fixtures, the problem may go deeper into your plumbing system.

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Sediment and Mineral Buildup in Pipes

What causes low water pressure scenarios in areas with hard water, like much of Texas? If you’ve ruled out your aerators, sediment and scale buildup in your pipes might be the next suspect. Calcium and other mineral deposits can accumulate along the interior of pipes, narrowing the passageways and restricting water flow.

Sediment can also accumulate in your water heater, especially if you haven't flushed it in a while. It can also restrict water flow and disrupt temperature consistency, where you will notice weaker pressure when using hot water, cloudy or discolored water from your taps, or faucets that sputter as trapped air escapes.

While flushing techniques are available, internal buildup often requires professional-grade tools to be appropriately cleared. Through the Stellar app, you can instantly book a licensed plumber to help with your system, making it flow like new again.

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Faulty Pressure Regulator or Valve Issues

If the water pressure suddenly drops throughout your home, the pressure regulator may be the culprit. This small but essential device keeps the water coming from the main line at a steady, safe level. When it begins to fail, the pressure can change drastically, sometimes dropping to a weak trickle, other times surging high enough to stress your pipes and fixtures.

Similarly, partially closed or corroded main shut-off valves can also limit flow. These valves are often located near the water meter or where the main line enters your home. It’s worth checking that they’re fully open, but beyond that, further adjustments should be left to professionals.

Because regulators are delicate and require calibration, replacing them yourself isn’t recommended. If you suspect a malfunction, book a service call through our app and let our licensed technicians handle it safely and efficiently. We’ll diagnose exactly why water pressure is low in your house and make the necessary repairs with minimal disruption.

Hidden Leaks and Pipe Damage

Another common reason for loss of water pressure in the house is leaking or damaged pipes. Even small leaks can redirect significant amounts of water before it reaches your faucets, leaving you with weak flow and higher utility bills. Leaks often occur in areas that are difficult to detect, such as behind walls, under slabs, or along outdoor irrigation lines.

Watch for these warning signs:

• Damp or discolored walls and ceilings
• Visible mold or mildew growth
• Musty odors 
• Unexplained increase in your water bill
• Constant sound of running water

Hidden leaks can cause structural damage and promote mold growth. The Environmental Protection Agency estimates that homes waste at least 90 gallons of water daily due to leaks. If you suspect one, don’t delay. Use the Stellar app to schedule leak detection and repair. Our professional team can use advanced equipment to pinpoint the source of leaks and stop them quickly.

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Municipal or Supply Line Problems

Sometimes, the problem isn’t inside your home at all. Citywide maintenance, a burst water main, or temporary adjustments to the municipal supply can all cause sudden drops in pressure. Check with your neighbors to see if they’re having the same problem. You can also contact your local water utility for updates on repairs, maintenance work, or routine line flushing that might be affecting your area.

If the issue appears isolated to your home, it’s worth calling a professional to confirm. Our technicians can determine whether the cause is internal or external, saving you unnecessary guesswork and helping you understand the real reasons for low water pressure in the house.

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When To Call the Professionals

When quick DIY fixes don’t restore full pressure, it’s time to call in the experts, like those from Stellar Home Maintenance. Fixing persistent low flow requires specialized tools and expertise. Attempting to handle these issues on your own can lead to further complications or even flooding.

If the water pressure is low in your house, you can instantly book trusted professionals to diagnose and repair issues through the Stellar app and have it resolved on the same day. Our licensed plumbers use advanced diagnostic tools to pinpoint the root cause and restore your system to optimal performance. With Stellar, there’s no waiting around or dealing with multiple service calls — just reliable service from experts you can trust.

Don’t Let Low Pressure Drain Your Day

Low water pressure may start as a minor annoyance, but it can be a sign of something more serious. At Stellar Home Maintenance, we make it easier than ever to keep these problems at bay with our Uber-style app.

Schedule plumbing inspections, repairs, and other maintenance services across Texas in just a few taps. Don’t let low pressure slow you down. Download the Stellar app today and book your service to get your home’s water flow back to full strength.

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